Washington - Area of significance: Architecture
| Union Passenger Station |
| Union Stables |
| Union Station |
| United Presbyterian Church |
| United Shopping Tower |
| United States Border Station |
| University Heights School |
| University National Bank Building |
| University of Washington Faculty Club |
| USCGC FIR |
| U.S. Courthouse |
| U.S. Immigrant Station and Assay Office |
| U.S. Inspection Station-Ferry, Washington |
| U.S. Inspection Station-Laurier, Washington |
| U.S. Marine Hospital |
| U.S. National Bank Building |
| U.S. Post Office |
| U.S. Post Office |
| U. S. Post Office and Courthouse |
| U.S. Post Office and Courthouse |
| U.S. Post Office and Customshouse |
| US Post Office-Bremerton Main |
| US Post Office-Camas Main |
| US Post Office-Chehalis Main |
| US Post Office-Clarkston Main |
| US Post Office-Colfax Main |
| US Post Office-Colville Main |
| US Post Office, Courthouse, and Custom House |
| US Post Office-Hoquiam Main |
| US Post Office-Kelso Main |
| US Post Office-Longview Main |
| US Post Office-Lyden Main |
| US Post Office-Montesano Main |
| US Post Office-Okanogan Main |
| US Post Office-Omak Main |
| US Post Office-Port Townsend Main |
| US Post Office-Prosser Main |
| U.S. Post Office-Pullman |
| US Post Office-Raymond Main |
| US Post Office-Sedro Woolley Main |
| US Post Office-Sunnyside Main |
| US Post Office-Tacoma Downtown Station-Federal Building |
| US Post Office-Toppenish Main |
| US Post Office-Vancouver Main |
| US Post Office-Walla Walla Main |
| Vancouver National Historic Reserve Historic District |
| Vancouver Public Library |
| Vancouver Telephone Building |
| Van Trojen House |
| Vashon Hardware Store |
| Verlot Ranger Station-Public Service Center |
| Victorian Apartments |
| Vincent School |
| VIRGINIA V |
| Volker, William, Building |
| Volunteer Park |
| Wagner Houseboat |
| Waitsburg High School |
| Waitsburg Historic District |
| Walker Apartment Hotel |
| Walla Walla Downtown Historic District |
| Wallingford Fire and Police Station |
| Wallingford-Meridian Streetcar Historic District |
| Ward House |
| Ward, Milo P., House |
| Wardner, James F., House |
| Warner, William and Ella, House |
| Washington Athletic Club |
| Washington Building |
| Washington Gas and Electric Building |
| Washington Hall |
| Washington School |
| Washington School |
| Washington School for the Blind |
| Washington State Capitol Historic District |
| Washington State Library |
| Washington State Normal School at Cheney Historic District |
| Washington State Normal School Building |
| Washington Street Historic District |
| Washington Street Public Boat Landing Facility |
| Waterville Hotel |
| Watt, William, House |
| Weaver, Lawrence and Lydia, House |
| Wedge Historic District |
| Weinhard, Jacob, House |
| Wells House |
| Wenatchee Carnegie Library |
| Wenatchee Fire Station #1 |
| Wenberg, Dr. Johan and Louise, House |
| Wendel Property |
| West Downtown Historic Transportation Corridor |
| West, Dr. Edmond, House |
| West Valley High School |
| Weyerhaeuser Timber Company Office Building |
| Whatcom Museum of History and Art |
| Whitcomb Cabin |
| White Center Fieldhouse and Caretaker Cottage |
| Whitehouse-Crawford Planing Mill |
| White River Bridge |
| White River Entrance |
Data from United States Park Service and Wikidata
