Washington - Criteria: A (event)
| 12th Avenue South Bridge |
| 14th Avenue South Bridge |
| Adair, William and Estella, Farm |
| ADVENTURESS |
| Aftermath Clubhouse |
| Agate Pass Bridge |
| Agen Warehouse |
| Aircraft Warning Service Observation Tower |
| Alaska Trade Building |
| Albers Brothers Mill |
| Allen, Horatio and Laura, Farm |
| Altair Campground Community Kitchen |
| American Legion Hall |
| American Veterans Building-Hoquiam |
| Ansorge Hotel |
| Appleton Log Hall |
| Arboretum Sewer Trestle |
| Arctic Building |
| Arndt Prune Dryer |
| ARTHUR FOSS (tugboat) |
| Ashford House |
| Assay Office |
| Auburn Post Office |
| Auburn Public Library |
| Auditorium Dance Hall, The |
| Aurora Avenue Bridge |
| Badger Mountain Lookout |
| Ballard Avenue Historic District |
| Ballard Bridge |
| Ballard Carnegie Library |
| Bank of Starbuck |
| Basalt Cobblestone Quarries District |
| Bellingham Herald Building |
| Bellingham National Bank Building |
| Berthusen Barn and Privy |
| Bethsaida Swedish Evangelical Lutheran Church Parsonage |
| Beverly Railroad Bridge |
| Black Diamond Cemetery |
| Black Warrior Mine |
| Blomeen, Oscar, House |
| Blue Mountain School |
| Blue Mouse Theatre |
| Bon Marche Department Store |
| Botten Cabin |
| Boundary Hydroelectric Project |
| B. P. O. E. Building |
| Bremerton Elks Temple Lodge No. 1181 Building |
| Bridge Creek Cabin-Ranger Station |
| Browns Point Lighthouse and Keeper's Cottage |
| Buckner Cabin |
| Buckner Homestead Historic District |
| Building No. 105, Boeing Airplane Company |
| Bump Block-Bellevue House-Hawthorne Hotel |
| Cabin Creek Historic District |
| Calhoun Hotel |
| Cama Beach Resort |
| Camp Major Hopkins |
| Camp Muir |
| Camp North Bend |
| Canyon Creek Shelter |
| Capitol Theatre |
| Carnegie, Andrew, Library |
| Carnegie Library |
| Cedar Creek Grist Mill |
| Centralia Downtown Historic District |
| Centralia Union Depot |
| Central Steam Heat Plant |
| Central Whidbey Island Historic District |
| Century 21-Washington State Coliseum |
| Chatter Creek Guard Station |
| Chelan Butte Lookout |
| Cheney Odd Fellows Hall |
| Chicago, Milwaukee, St. Paul and Pacific Railroad: South Cle Elum Yard |
| Chicago, Milwaukee, St. Paul & Pacific Railroad-Kittitas Depot |
| Chinese Baptist Church |
| Chinook Pass Entrance Arch |
| Chinook Point |
| Chittenden Locks and Lake Washington Ship Canal |
| Christine Falls Bridge |
| City Ramp Garage |
| City Waterway Bridge |
| Clallam County Courthouse |
| Claquato Church |
| Clarkston Public Library |
| Clemmer Theater |
| Cloverland Garage |
| Cobb Building |
| Coeur d'Alene Park |
| Coke Ovens |
| College Hill Historic District |
| Colman Automotive Building |
| Colonnade Hotel |
| Columbia City Historic District |
| Columbia County Courthouse |
| Columbia River Bridge |
| Columbia River Bridge at Bridgeport |
| Columbia River Bridge at Kettle Falls |
| Columbia River Quarantine Station |
| Columbia Theater |
| Colvos Store |
Data from United States Park Service and Wikidata
