Bill Speidel's Underground Tour (Pioneer Square)

Bill Speidel's Underground Tour offers guided walks through the subterranean passageways and reconstructed storefronts beneath Pioneer Square that date to Seattle's rebuilding after the 1889 Great Fire. The tour company was founded in the 1960s and popularized the idea of touring the buried portions of the original street level. The attraction interprets civic history, geology, and early commercial life in downtown Seattle.