Tacoma, Washington in the context of University of Washington Tacoma

The Cascade Volcanoes (also known as the Cascade Volcanic Arc or the Cascade Arc) are a number of volcanoes in a continental volcanic arc in western North America, extending from southwestern British Columbia through Washington and Oregon to Northern California, a distance of well over 700 miles (1,100 km). The arc formed due to subduction along the Cascadia subduction zone. Although taking its name from the Cascade Range, this term is a geologic grouping rather than a geographic one, and the Cascade Volcanoes extend north into the Coast Mountains, past the Fraser River which is the northward limit of the Cascade Range proper.

Some of the major cities along the length of the arc include Portland, Seattle, and Vancouver, and the population in the region exceeds 10 million. All could be potentially affected by volcanic activity and great subduction-zone earthquakes along the arc. Because the population of the Pacific Northwest is rapidly increasing, the Cascade volcanoes are some of the most dangerous, due to their eruptive history and potential for future eruptions, and because they are underlain by weak, hydrothermally altered volcanic rocks that are susceptible to failure. Consequently, Mount Rainier is one of the Decade Volcanoes identified by the International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) as being worthy of particular study, due to the danger it poses to Seattle and Tacoma. Many large, long-runout landslides originating on Cascade Volcanoes have engulfed valleys tens of kilometers from their sources, and some of the areas affected now support large populations.

The Nisqually River /nɪˈskwɑːli/ is a river in west central Washington in the United States, approximately 81 miles (130 km) long. It drains part of the Cascade Range southeast of Tacoma, including the southern slope of Mount Rainier, and empties into the southern end of Puget Sound. Its outlet was designated in 1971 as the Nisqually Delta National Natural Landmark.

The Nisqually River forms the Pierce–Lewis county line, as well as the boundary between Pierce and Thurston counties.

Puget Sound (/ˈpjuːdʒɪt/ PEW-jit; Lushootseed: x̌ʷəlč IPA: [ˈχʷəlt͡ʃ] WHULCH) is a complex estuarine system of interconnected marine waterways and basins located on the northwest coast of the U.S. state of Washington. As a part of the Salish Sea, the sound has one major and two minor connections to the Strait of Juan de Fuca, which in turn connects to the open Pacific Ocean. The major connection is Admiralty Inlet; the minor connections are Deception Pass and the Swinomish Channel.

Puget Sound extends approximately 100 miles (160 km) from Deception Pass in the north to Olympia in the south. Its average depth is 450 feet (140 m) and its maximum depth, off Jefferson Point between Indianola and Kingston, is 930 feet (280 m). The depth of the main basin, between the southern tip of Whidbey Island and Tacoma, is approximately 600 feet (180 m).

Skagit County /ˈskædʒɪt/ is a county in the U.S. state of Washington. As of the 2020 census, the population was 129,523. The county seat and largest city is Mount Vernon. The county was formed in 1883 from Whatcom County and is named for the Upper and Lower Skagit Indian tribes, which have been indigenous to the area prior to European-American settlement.

Skagit County comprises the Mount Vernon-Anacortes, WA Metropolitan Statistical Area, and is included in the Seattle-Tacoma, WA Combined Statistical Area. It is located in the Puget Sound region, and it is known for its strong agricultural sector and annual tulip festival.

Châteauesque (or Francis I style, or in Canada, the Château Style) is a revivalist architectural style based on the French Renaissance architecture of the monumental châteaux of the Loire Valley from the late fifteenth century to the early seventeenth century.

The term châteauesque (literally, "château-like") is credited (by historian Marcus Whiffen) to American architectural historian Bainbridge Bunting, although it can be found in publications that pre-date Bunting's birth. As of 2011, the Getty Research Institute's Art & Architecture Thesaurus includes both "Château Style" and "Châteauesque", with the former being the preferred term for North America.

The Portland metropolitan area is a metro area with its core in the U.S. states of Oregon and Washington. It has 5 principal cities, the largest being Portland, Oregon. The U.S. Office of Management and Budget (OMB) identifies it as the Portland–Vancouver–Hillsboro, OR–WA Metropolitan Statistical Area, a metropolitan statistical area used by the United States Census Bureau (USCB) and other entities. The OMB defines the area as comprising Clackamas, Columbia, Multnomah, Washington, and Yamhill Counties in Oregon, and Clark and Skamania Counties in Washington. The area had a population of 2,512,859 at the 2020 census, an increase of over 12% since 2010.

The Oregon portion of the metropolitan area is the state's largest urban center, while the Washington portion of the metropolitan area is the state's third-largest urban center after Seattle and Spokane (the Seattle Urban Area includes Tacoma and Everett). Portions of the Portland metro area (Clackamas, Multnomah, and Washington Counties) are under the jurisdiction of Metro, a directly elected regional government which, among other things, is responsible for land-use planning in the region.