The Mutual Life Building, originally known as the Yesler Building, is an historic office building located in Seattle's Pioneer Square neighborhood that anchors the West side of the square. The building sits on one of the most historic sites in the city; the original location of Henry Yesler's cookhouse that served his sawmill in the early 1850s and was one of Seattle's first community gathering spaces. It was also the site of the first sermon delivered and first lawsuit tried in King County. By the late 1880s Yesler had replaced the old shanties with several substantial brick buildings including the grand Yesler-Leary Building, which would all be destroyed by the Great Seattle Fire in 1889. The realignment of First Avenue to reconcile Seattle's clashing street grids immediately after the f