Often referred to as Washington State, to distinguish it from the national capital Washington, D.C. on the other side of the USA, Washington offers rugged coastline, deserts, forests, mountains, volcanoes, and hundreds of coastal islands to explore. The Cascade Mountains bisect the state, with the damp forested coastal areas to the west, and pine forests, deserts and irrigated farmland of the Columbia River Plateau to the east.
On the southeastern side of the Cascades; this region features canyons, deserts and steppes set in hillside valleys. Cities included within this region are Kennewick, Walla Walla, and Yakima.
Beautiful mountains and fresh water lakes, outdoor activities galore, national parks (North Cascades National Park) and secluded getaways await travelers to the North Cascades region. Cities included within this region are Bellingham, Leavenworth, and Wenatchee.
Known for its rugged beauty with rain forests against a spine of dramatic mountains and miles of isolated beaches. This area includes the Olympic National Park.
This largely agricultural area includes the cities of Spokane, Cheney and Pullman.
With Seattle, the state's largest city; Tacoma, Olympia (capital), and the islands and waters between Seattle and the Olympic Peninsula including Vashon Island and the Kitsap Peninsula
This semi-arid area includes the Lake Roosevelt National Recreation Area created by the Grand Coulee Dam.
A scattering of forested islands in the serene waters adjacent to British Columbia. Ferries, private boats, kayaks, and orca (whales) criss-cross the waters, while float planes and bald eagles soar overhead.
Known for its breathtaking coastline and amazing views along the Columbia River.
There are many cities in Washington; these are some of the more popular.
Itineraries
The skeletal remains of Kennewick Man, one of the oldest and most complete human remains ever found in North America, were discovered in Washington. Prior to the arrival of explorers from Europe, the region had many established tribes of Native Americans, notable for their well developed economy, complex trade agreements, elaborate and generous culture and ornate art forms and carving. Prominent among their industries along the coast were salmon fishing and, notably among the Makah, whale hunting.
The first recorded European landing on the Washington coast was by Spanish Captain Don Bruno de Heceta in 1775. He claimed all the coastal lands up to Prince William Sound for Spain, which they maintained made the Pacific a "Spanish lake" and all its shores part of the Spanish Empire. Early European explorers unwittingly introduced smallpox which decimated the native culture.
In 1778, British explorer Captain James Cook sighted Cape Flattery, at the entrance to the Strait of Juan de Fuca, but Cook did not realize the strait existed. It was not discovered until Charles William Barkley, captain of the Imperial Eagle, sighted it in 1787. The straits were further explored by Spanish explorers in 1790 and 1791, and British explorer George Vancouver in 1792. The British-Spanish Nootka Convention of 1790 ended Spanish claims of exclusivity and opened the Northwest Coast to explorers and traders from other nations, most notably Britain and Russia as well as the fledgling United States. American captain Robert Gray (for whom Grays Harbor County is named) then discovered the mouth of the Columbia River. He named the river after his ship, the Columbia. Beginning in 1792, Gray established trade in sea otter pelts. The Lewis and Clark Expedition entered the state on October 10, 1805.
Britain and the United States agreed to what has since been described as "joint occupancy" of lands west of the Continental Divide to the Pacific Ocean as part of the Anglo-American Convention of 1818, which established the 49th Parallel as the international boundary west from Lake of the Woods to the Rocky Mountains. Resolution of the territorial and treaty issues, west to the Pacific, were deferred until a later time. Spain, in 1819, ceded its rights north of the 42nd Parallel to the United States, although these rights did not include possession.
Negotiations with Great Britain over the next few decades failed to settle upon a compromise boundary and the Oregon boundary dispute was highly contested between Britain and the United States. Disputed joint-occupancy by Britain and the U.S. lasted for several decades. With American settlers pouring into Oregon Country, Hudson's Bay Company, which had discouraged settlement because it conflicted with the fur trade, reversed its position in an attempt to maintain British control of the Columbia District.
The growing populace of Oregon Territory north of the Columbia River formally requested a new territory, which was granted by the U.S. government in 1853. The boundary of Washington Territory extended farther east than the present state's, including what is now the Idaho Panhandle and parts of western Montana, and picked up more land to the southeast that was left behind when Oregon was admitted as a state. The creation of the Idaho Territory in 1863 established its eastern border at 117 degrees west. Washington became the 42nd state in the United States on November 11, 1889. It was the final state in the contiguous U.S. that has a coastline.
While Washington (and especially Seattle) is often portrayed as an extremely rainy place, the climate of Washington is actually very diverse. The part of the state east of the Cascades is quite dry and arid. In the Puget Sound area, it rains often but the volume is not as much as many other major cities, and in the summer several weeks in a row can have no rain. Being in a convergence zone the weather can change very quickly and is oftentimes difficult to predict. The west coast of the Olympic Peninsula is the rainiest part of the state and sustains lush rain forests.
Washington observes all the federal holidays, except Columbus Day. However, some cities and towns that have a large population of federal workers or military personnel might observe Columbus Day anyway.
The Pacific Northwest accent spoken in Washington State is considered very similar to the General American standard accent (native to the Midwest), popularized in the 20th century by radio, TV and movies. People in the area generally have little to no problem understanding different accents of the English language. The Pacific Northwest attracts tourists from around the world, and it is common to hear many foreign languages being spoken in public in major tourist areas.
There are ethnically diverse neighborhoods in some of the larger cities where many languages are spoken, including Seattle's large International District where many Asian languages are spoken. Washington is the thirteenth most populated state for example, but by comparison has the fourth highest Asian population. Spanish is spoken by the majority in some smaller pockets in eastern Washington and Oregon. Seattle's 98118 zip code centered on the Columbia City neighborhood in South Seattle is considered the most ethnically diverse zip code in the country by the US Census bureau with 59 languages regularly being spoken.
Chinook Jargon was a pidgin or trade language established among indigenous inhabitants of the region. After contact with Europeans, French, English, and Cree words entered the language, and "eventually Chinook became the lingua franca for as many as 250,000 people along the Pacific Slope from Alaska to Oregon." Chinook Jargon reached its height of usage in the 19th century though remained common in resource and wilderness areas, particularly but not exclusively by Native Americans and Canadian First Nations people, well into the 20th century. Chinook Jargon was still in use in Seattle until roughly the eve of World War II, making Seattle the last city where the language was widely used. Today its influence is felt mostly in place names and a handful of localized slang terms. Pronunciation of some of these terms is difficult and often separates the visitor from the local.
Many of the area names came from Native American languages and may be difficult for outsiders to pronounce including Alki, Seattle, Kitsap, Yakima, Duwamish and Lummi, while still other areas were named by early Spanish and English explorers.
Amtrak has 3 routes into Seattle's King Street Station. These are:
Interstate 5 and the Peace Arch Border Crossing is the main land port-of-entry to Washington from Canada. However this is only one of five land crossing points between the Lower Mainland region of BC and the Northwest Cascades region of Washington. See the Get in β by car section of Northwest Cascades region article for details.
Interstate 5 (and Interstate 205) provide access from the greater Portland area. Interstate 82/US 395 provides access from eastern Oregon to the tri-cities area of Eastern Washington. For a more scenic entry, try taking US Route 101 along the Washington and Oregon coast, but be aware for the many speed traps in the small cities.
Interstate 90 is the main route in via Coeur D'Alene, but US 2 provides access to the northern parts of Idaho and Washington.
The Sidney-Anacortes ferry service has been suspended and will not resume until at least 2030.
With the exception of the Victoria Clipper the ferries crossing the San Juan de Fuca and the Puget Sound are capable of transporting vehicles.
A quick and spectacular, though not cheap, way to travel. There are many American and Canadian companies offering sea plane travel into and around the Puget Sound area. Such as Kenmore Air and Northwest Seaplanes both based in Seattle with regular scheduled flights and chartered flights within the region and from Canada. Many planes only offer between 6 and 8 seats and are small enough that the captain may ask for someone to sit in the front seat next to them. If you ask nicely they may be willing to take you on a scenic route or follow a pod of whales as opportunities and schedules allow.
Cruise ships arrive in the area in Astoria (Oregon) and Seattle (Washington) with continuing connections along the west coast including Canada and Alaska.
Bell Street Pier Cruise Terminal at Pier 66, 2225 Alaskan Way S, Seattle. near the middle of Seattle downtown's waterfront, serves as home port for Norwegian Cruise Line and Celebrity Cruises. Has bus, taxi and shuttle connections for transfer of passengers and luggage. For travelers with connecting flights, Seattle-Tacoma International Airport is less than 15 mi (24 km) away.
Smith Cove Cruise Terminal at Pier 91, 2001 W Garfield St, Seattle. At the north end of Seattle's downtown waterfront, serves as home port to Holland America Line, Royal Caribbean and Princess Cruises.
It is not coincidence that so many cities in this region are on the water. Early settlers found the thick regional forests too impenetrable to navigate by land so waterways became the Pacific Northwest's early highway system.
However, when arriving from Canada or other foreign countries, there are only a handful of ports, including Roche Harbor, Friday Harbor, Anacortes and Bellingham, that are official U.S. ports-of-entry and can process boaters through customs. The Cardinal Rule is touch land at customs dock before any other stops; fines for not doing so can be up to $5000. Besides a passport for everyone on board, you will need your boat's license number and User Fee Decal number.
Customs enforces USDA guidelines for what foods are acceptable to bring into the country and these guidelines are constantly changing so it is best to check in with them before arriving. Boaters are responsible for knowing the prohibited foods and can be fined for not declaring them.
The Pacific Crest Trail (PCT) is a well-known trail that extends along the West coast of the United States, from Mexico to Canada. It passes through California, Oregon, and Washington State.
The Pacific Northwest National Scenic Trail is a trail connecting Washington with the Continental Divide Trail in Montana.
To explore most of Washington (outside of main cities), you will generally need a car because there is very little public transportation, especially to more remote locations.
Eyes on the road at all times!
Do not use or hold your phone while driving, even while stopped in a red light! Police across all of Washington State have also been on the lookout for drivers disobeying the law while distracted for all other reasons (i.e. eating, drinking, grooming). A hefty fine of $136 for the first offense is issued in addition to a mark on your insurance that is equivalent to driving under the influence of alcohol (DUI), upon which the law is colloquially called E-DUI.
Should you need to use your phone for navigation, use a speaker while hiding your phone or use a phone holder that you can hang onto your dashboard. Input your destination before you drive or have a passenger do it for you. It is not recommended to place it on your lap as you might still have the tendency to look down on it or as it may easily fall off. Should there be a need to answer or make phone calls, pull over to park or sync your phone with the car's entertainment system before driving so that you do not need to hold onto it.
Washington's road network is well-maintained and cars are the quickest way to travel around the state. The main freeways are I-5, running along the west side of Washington through many of Western Washington's population centers. I-90, running east of Seattle to Ellensburg and Spokane, and I-82, which starts at I-90 near Ellensburg and heads southeast through Yakima and Kennewick. Other US highways and WA state routes access all parts of the state. Rental-car agencies can be found in the larger cities.
All of the state's major east-west highways cross over the Cascade Mountains, which are subject to closure, delays, and studded tire or chain requirements in wintertime. In severe weather, it may be better to use I-84 just across the border in Oregon. This route goes through the relatively low elevation of the Columbia River Gorge. On rare occasion, I-84 may also have weather-related problems where it passes north of Mount Hood. A 20-mile detour on Washington State Hwy 14 is available between I-84 Exit #44 Bridge of the Gods, and Exit #64 Hood River Bridge. Both have a small toll.
Many ferry destinations are not islands without a bridge, but peninsulas where going by land would involve a very long detour. The most extreme example of this is the Port Townsend -- Keystone route on State Hwy 20 which is only five and a half miles across by ferry. Traveling by the shortest land route (Tacoma Narrows) turns into a whopping 217 miles (354 km) journey!
Getting around by train on Amtrak is likely to be quite a hassle, especially with infrequent departures, slow travel times, inconvenient schedules and limited routes. For those who still wish to take trains to get around Washington, these are the main routes:
The Puget Sound region is one of the most popular places for cruising on small craft in the United States offering hundreds of miles of protected coastlines and dozens of remote islands to explore. Many cities and towns were built around their harbors and are well suited to cater to visiting boaters. The Strait of San Juan De Fuca, the Pacific coast and even the Columbia River are also excellent areas to travel by boat with a wide variety of ports and possibilities for visiting boaters.
Information on transit can be found here.
Delta/Delta Connection and Alaska/Horizon Airlines offer intrastate flights from Seattle to Portland, Pasco and Spokane. In addition to the other larger airports listed under Get in. Horizon Air (subsidiary of Alaska Air) is the only carrier that offers intrastate flights to the following small cities from Seattle-Tacoma International Airport and/or Portland International Airport (nearest to Vancouver, Washington and southwest Washington):
The iconic snow packed Mount Rainier towers over western Washington and is symbolic of the natural beauty of the area which includes both the Olympic and Cascade mountain ranges which extend into Oregon and even down into northern California. However Washington has several other national parks including the North Cascades National Park famous for having most of the glaciers in the lower 48 states and Olympic National Park which is the only UNESCO World Heritage Site in the Pacific Northwest and famous for its glacier peaked mountains, vast rainforests and the longest undeveloped beach in the lower 48. Mt. St. Helens was the site of one of the largest volcanic eruptions in recorded United States history and shed ashes over dozens of states. However Washington is also a very diverse region including rugged coastlines, sparkling streams, huge rivers, wide deserts and picturesque islands. The Columbia Gorge Scenic drive and its waterfalls follows along the mighty Columbia river which divides Washington from Oregon.
A Discover Pass is required for all private vehicles entering a state park. There are some exceptions for camping, fishing, and hunting, which have their own fees, plus a few annual "State Parks free days." The pass applies only to vehicles--there's no per person admission charge to the parks. A daily pass is available for those staying only a day or two; otherwise it's valid for one year (no upgrades) for two vehicles. (Only one vehicle at a time, and you can fill in the second license plate number later.) Dealers, such as sporting goods stores, and online sales add a surcharge. As most state parks have no staffed entry booth, there's been confusion over whether it's allowed to enter without a pass, then purchase one at the ranger station or visitors center. Only do so during daily business hours, going promptly from the main entrance without any recreational stops in between. Calling the park ahead of time, and inquiring about the pass is a good idea if you don't already have one. Some smaller state parks, and even larger ones at off-peak times are completely unattended, requiring the pass be purchased elsewhere in advance. There's no additional fees for out-of-state vehicles entering the parks, but there is a non-resident surcharge for camping.
Unlike many areas of the country, the prehistory of the region is rich and evident. Areas such as Suquamish still actively practice Native American traditions and Northwest Native American art is a common theme even in contemporary urban public artworks. The city of Seattle is named after Chief Seattle and many other natural and manufactured features bear the names of the areas first peoples which are often difficult for outsiders to pronounce.
Areas such as Ebey's Landing National Historical Reserve have kept large areas preserved much as they were when the first European settlers came to the area. Klondike Gold Rush - Seattle Unit National Historical Park - Klondike Gold Rush National Historical Park preserves the story of the 1897-98 stampede to the Yukon gold fields and Seattle's role in this event
Most of the areas architecture can of course be seen in urban areas such as Seattle's Smith Tower which although now dwarfed by Seattle's modern skyscrapers stood for years as the tallest building west of the Mississippi. But interesting architecture can be seen even across rural areas such as Puget Sounds first lighthouse in Hansville.
There are many museums in the region and although most of the well known one's such as the Seattle Art Museums and the Museum of Glass in Tacoma tend to be in the larger cities, many quality museums can be found scattered across the area and are often a rewarding and enriching break when exploring. Even small towns will sometimes offer their own regional art and historical museums that offer glimpses of local art, history and culture.
Washington is one of several states that has decriminalized cannabis, making it legal to purchase (although there are still plenty of other regulations). Marijuana products are sold in dedicated stores ("dispensaries") which you can easily search for. You must be 21 years old to enter a store or purchase, and must show photo ID when entering. You can purchase as much as you're allowed to possess, which is any combination of: of marijuana, of marijuana-infused edibles in solid form, 72 ounces () in liquid form, or 7 grams of marijuana concentrate. Staff are usually very knowledgeable about the products available and their different effects, such as the amount of THC versus CBD, and can recommend products to suit your needs. Most stores are cash only. You can't consume within view of the public, which generally means you must be on private property (a smoking room in a hotel may count, but many specifically ban marijuana). And driving while stoned is illegal above the minuscule limit of 5 nanograms of THC. Cannabis is still illegal under US federal law; this includes possession and use on federal lands, which includes Washington's many national parks and forests. Taking marijuana (or other drugs) across state lines (as well as other countries, even where marijuana is legal, such as Canada) is considered drug trafficking and can be treated very harshly by authorities.
The Pacific Northwest is best known for its salmon, but a large variety of other seafood is available in the area. Oftentimes seafood comes in short bursts with seasonal migrations available for only short amounts of time so watch closely for seasonal specials in restaurants and markets.
Shellfish are the prized resources of the Puget Sound. The cool, clean waters provide some of the finest shellfish habitat in the world. Washington State is the nation's leading producer of farmed bivalve shellfish (clams, mussels and oysters) but other specialties like Geoducks are sometimes available for the more adventurous.
The Dungeness Crab is a popular seafood prized for its sweet and tender flesh and high ratio of meat. Its common name comes from the port of Dungeness, Washington where the first commercial harvesting of the crab was done. The Dungeness Crab is a commercially important crab in the state of Washington's territorial waters and was the first shellfish harvested commercially in the area but other crab species are also common.
The area's mild climate, rich soil and abundant water resources have created a bountiful climate for the many varieties of fresh produce available across the region. Farmers' markets are common in both urban and rural areas and a great way to experience local culture as well as local foods.
Apples are one of Washington State's biggest exports with over 100 million boxes of apples picked every year and shipped around the globe but a wide variety of other crops are grown in abundance every year from wheat and potatoes to nuts and vegetables making fresh local produce abundant.
Few, if any, American regions can challenge the Pacific Northwest's love of coffee. According to a group of industry market researchers, there were an amazing 1,640 coffee shops in the Puget Sound region in 2011, ranking it the most popular coffee region in the country but coffee is popular all across the region. It is not surprising that such coffee giants such as Starbucks have exported the Pacific Northwest's coffee culture around the globe.
High quality Arabica coffee beans roasted with greater emphasis on taste and freshness, brewed with dripped water or "espresso" steam) arguably has its birthplace here. Starbucks and Tully's are apparent brands that most associate specialty coffee with Seattle. However, many small local companies are the ones that have paved the way (and continue to do so) in pioneering the specialty coffee industry. When you visit Seattle, be sure to check out these renowned coffee roasters (in no particular order): Cafe Allegro (Seattle's original espresso bar, tucked away in an alley in the U-District), Espresso Vivace, Caffe Vita, Zoka Coffee, Victrola Coffee, Stumptown Coffee, Caffe Appassionato, Caffe Umbria, Caffe Fiore, Fonte Coffee, Pura Vida, Vashon Island Coffee, Lighthouse Coffee, Caffe D'Arte, Tony's Coffee/Caffe Ladro, Top Pot Donuts & Coffee, Batdorf & Bronson, Mukilteo Coffee, Moka Joe Coffee, Pioneer Coffee
Microbreweries and beer in general are a Northwest specialty, and the area has many to offer for beer enthusiasts. In 2012 Washington had 158 craft breweries making it second only to California in the number of micro breweries. The larger brewers, like Redhook and Pyramid, distribute their products regionally or nationally like their coffee cousins, while other brews can only be found in local stores or bars (some notable brewers don't even bottle their product). Ask your servers for local beer recommendations and search out regional microbrews in stores. Hops are the key ingredient in beer making and Washington State's fertile Yakima Valley is by far the biggest exporter of hops in the US giving area brewers another edge in making the best beers.
Eastern Washington is known for its wines. Walla Walla alone boasts over one hundred wineries β including some of the area and nation's best cellars β with tasting rooms downtown this area is popular for winery tours. But don't expect the stodginess of elitist wine areas elsewhere; eastern Washington has many affordable and welcoming communities with small town roots.
Do not litter along the freeways or highways. The fines for littering can range from several hundred to several thousand dollars depending on the scenario. It is an offense that the state takes very seriously. If you are caught in the act you will know what the state means by the "Litter and It Will Hurt" signs which frequently decorate its roadways.
Like many western states, Washington State has had cases of hantaviral pulmonary syndrome, 41 confirmed cases in the state since 1993. Realistically, however, hantavirus is of very little concern to the traveler; but sensible precautions should be applied. Do NOT venture in a wild animal's den or handle any dead animals; particularly rodents, as rodents seem to be the primary vector of the illness. There is no cure for the disease, treatment mainly consists of supportive therapies. The main defense against the virus is prevention.
For more information on prevention and transmission, visit the Centers for Disease Control and Prevention website on hantaviruses.
In the Cascade Mountains (which divide the state into halves) there can be significant snow accumulations during the late fall and winter months. This poses a danger for avalanches whenever these areas experience warm up periods, regardless of how brief they may be. Mountain passes are sometimes closed for avalanche control and may effect travel plans, especially along I-90 from Yakima to Seattle. Check the Washington State Department of Transportation website for information regarding Avalanche control.
If going into the mountains during winter and early spring months, refer to the Northwest Weather and Avalanche Center website for information regarding the current avalanche dangers throughout the Cascade region of the state.
Washington is generally very safe and the chance of you running into any trouble is very, very low. Certain areas of Seattle, Tacoma, Spokane and Yakima can become seedy after dark and it is therefore advised that one avoid being out alone very late at night; this is especially true in unlit places where you are an easy target for any crime or other illegal activity. See the "Stay Safe" section of the Seattle, Spokane, Tacoma, and Yakima articles.
Always be confident, or at least fake confidence. Obviously, pick pockets and such tend to target people who look vulnerable. Avoid wearing excessive amounts of jewelry and other expensive items which might catch a robber's eye. Be sure to secure personal belongings where they will not be tampered with or stolen. Property crime is the largest threat in the state to a tourist.
If you find yourself in an emergency situation (of any kind), dial 9-1-1 on your phone or for free from any available payphone.
East of the Cascade Mountains, the state's terrain begins to turn into desert and temperatures often exceed in regions such as the Yakima Valley and the Columbia River Plateau. If you are planning on hiking into these locations, follow desert survival guidelines. Be sure to take plenty of water (at least one gallon per person, per day), sunscreen and wear light clothing. Let someone know where you are going and when you expect to return.
Also, it is best to hike during the earlier part of the day, as thunderstorms tend to develop suddenly during the afternoon. In the event you encounter inclement weather conditions, seek high ground immediately. Thunderstorms can cause flash flooding in canyons and other low laying areas.
Washington is one of a handful of states where recreational marijuana use is legal. Under state law, any adult aged 21 or over may possess up to 1 ounce (28 g) of usable marijuana (the harvested flowers or "bud"), 16 ounces (450 g) of marijuana-infused product in solid form, 72 fluid ounces (2.1 L) in liquid form, or any combination of these. You can buy marijuana only at retail stores licensed by the state to sell marijuana.
Smoking in public and driving while high are still illegal. The DUI limit is 5 nanograms of THC per milliliter of blood. It's also illegal to take any marijuana into military bases in Washington state or out of Washington, including to Washington's marijuana-friendly neighbor, Oregon, or even it's international neighbor, Canada, where Marijuana is legal; this is considered drug trafficking. And it's still a federal crime to keep or smoke marijuana, despite what Washington's laws say, though enforcement is in a state of flux. The consequences are even more severe when taking marijuana into Canada. If you choose to partake, inform yourself of the risks. If you'll go to Canada, make sure you declare any cannabis that you have. Not declaring cannabis will lead you to a serious criminal offense against you.
There are a few scattered "clubs" in the state allowing patrons to smoke, and medical marijuana shops are prolific, but the state legislature is still working out the details and taxation. Hempfest, an annual summer rally in Seattle, is the largest pro-marijuana rally in the world.
The drinking age in Washington is 21, and the DUI limit is 0.08% blood alcohol content.
Earthquakes and tsunamis are unusual but not unheard of in Washington State including the possibility of a Subduction Zone or Megathrust Quake. These are the largest type of earthquakes in the world, but also the rarest. The most recent one in the Pacific Northwest was about 300 years ago. Most coastal areas have well marked evacuation routes so always be aware of your surroundings.
During the winter months, the western side of the state often receives significant rainfall which softens the grounds to such a point that landslides sometimes occur. Be especially alert when driving. Embankments along roadsides are particularly susceptible to landslides. Watch the road for collapsed pavement, mud, fallen rocks, and other indications of possible landslides or debris flows.
If you encounter a landslide, leave the area immediately if it is safe to do so and call the local fire, police or public works department.
You must be 21 years of age to legally smoke tobacco. It is illegal in Washington state to smoke in a workplace, restaurant, bar, bowling alley, non-tribal casino, and bus stop (though everyone does in the latter). Smoking is also banned within 25 feet (8 meters) of a door or window that can open or a ventilation intake.
Volcano safety is, to put it mildly, a controversial subject; see the article on Volcanoes (and, particularly, its discussion page) for some of the issues. Washington state is home to five major, active volcanoes, plus one just across the border in Oregon: Mount St. Helens (1980), Mount Rainier (1894), Mount Baker (1880), Mount Hood, Oregon (1866), Glacier Peak (c. 1700), and Mount Adams (c. 550 B.C.). The majority of these are considered to be tourist destinations, particularly Rainier and St. Helens.
If planning to visit one of these locations, follow the policy regarding any road and/or trail closures that at first glance may appear unnecessarily conservative, but it is not. The closures aren't there simply to inconvenience and irritate you. If a trail is closed due to eruptive hazard then stay off the trail.