Seattle Underground beneath Pioneer Square

After the Great Seattle Fire of 1889, portions of Pioneer Square were rebuilt with streets raised above original storefronts; many original street-level spaces remain intact below the current sidewalks. These subterranean storefronts and sidewalks are accessible today via guided Seattle Underground tours that begin in Pioneer Square. The tours document the 1890s street-raising and show surviving 19th-century shopfronts and alleyways beneath the modern street level.