Category:20th-century architecture in Washington (state)

• 1900s architecture in Washington (state) (13 C, 26 F)
• 1910s architecture in Washington (state) (15 C, 11 F)
• 1920s architecture in Washington (state) (19 C, 9 F)
• 1930s architecture in Washington (state) (14 C, 1 F)
• 1940s architecture in Washington (state) (12 C, 4 F)
• 1950s architecture in Washington (state) (12 C, 4 F)
• 1960s architecture in Washington (state) (12 C, 1 F)
• 1970s architecture in Washington (state) (15 C)
• 1980s architecture in Washington (state) (15 C)
• 1990s architecture in Washington (state) (13 C)

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• 20th-century churches in Washington (state) (11 C)
• 20th-century houses in Washington (state) (4 C, 4 F)
• 20th-century skyscrapers in Washington (state) (2 C)

B

• 20th-century bridges in Washington (state) (16 C, 7 F)

C

• 20th-century coastal fortifications in Washington (state) (7 C)