Art Museums
- Frye Art Museum
- Maryhill Museum of the Arts
- Museum of Glass - Tacoma
- Museum of Northwest Art - La Conner
Museum of Velvet Painting
- Seattle Asian Art Museum
- Seattle Art Museum
- Tacoma Art Museum
Also see: Art Galleries
Children's Museums
- The Children's Museum
- The Children's Museum of Tacoma
- Hands On Children's Museum
- Mindport Exhibits - Bellingham
Historical
- African American Museum of Tacoma
- Anacortes History Museum
- History House
- Karpeles Museum - Tacoma
- Korean American Historical Society
- Log House Museum
- Marymoor Museum of Eastside History
- Museum of History and Industry
- Nordic Heritage Museum
- Northwest Lesbian and Gay History Museum Project
- Seattle Municipal Archives
- White River Valley Museum - Auburn
- Whatcom Museum of History and Art
- Wing Luke Asian Museum
Science and Nature
- Burke Museum of Natural History and Culture
- Odyssey: The Maritime Discovery Center
- Pacific Science Center
- Stonerose Interpretive Center
- The Whale Museum at Friday Harbor