King County Washington (Historic Districts) has 35 places on the National Register of Historic Places including 8 places of National significance and 7 places of Statewide significance. Significant places include Chittenden Locks and Lake Washington Ship Canal, Gas Works Park, Naval Air Station (NAS) Seattle, Pioneer Building, Pergola, and Totem Pole and Pioneer Square--Skid Road Historic District (Boundary Increase) dating back to 499 BC.
Some of the country's most noteable architects helped create the King County places including Bebb & Gould, Olmsted Brothers, Jefferies-Norton Corp, Great Northern Railway, James Wehn, Stone & Webster, Elmer Fisher, Charles Baker, Richard Haag and Ellsworth Prime Storey. Prominent architectural styles found in King Country are Bungalow/Craftsman, Colonial Revival and Late 19th And 20th Century Revivals.