Washington State Capitol
| Washington State Capitol Historic District | |
| Location | 416 Sid Snyder Avenue SW, Olympia, Washington 98504 | 
|---|---|
| Coordinates | 47°02′09″N 122°54′17″W / 47.03583°N 122.90472°W | 
| Area | 230,400 ft2 (21,404 m2) | 
| Built | 1928 | 
| Architect | Walter R. Wilder, Harry K. White | 
| Architectural style | American neoclassic | 
| NRHP reference No. | 79002564 | 
| Added to NRHP | June 22, 1979 | 
The Washington State Capitol (or "Legislative Building") in Olympia is the home of the government of the state of Washington. It contains the chambers of the Washington State Legislature, offices for the governor, lieutenant governor, secretary of state, and state treasurer. It is part of a larger administrative campus including buildings for the Washington Supreme Court, the Washington Governor's Mansion, and many other state agencies.
Olympia was chosen as the territorial capital in 1853 and a two-story building was constructed for use by the legislature beginning the following year. A permanent capitol building was planned following statehood in 1889, but construction stalled amid poor economic conditions. The state government moved to the existing county courthouse in Olympia in 1905, but it proved to be too small for the state's needs. Design of the permanent capitol resumed in 1911 and construction began the following year. The Legislative Building opened in 1928 and features a monumental dome.