Adler and Sullivan initially achieved fame as theater architects. While most of their theaters were in Chicago, their fame won commissions as far west as Pueblo, Colorado, and Seattle, Washington (unbuilt). The culminating project of this phase of the firm's history was the 1889 Auditorium Building (1886–90, opened in stages) in Chicago, an extraordinary mixed-use building that included not only a 4,200-seat theater, but also a hotel and an office building with a 17-story tower and commercial storefronts at the ground level of the building, fronting Congress and Wabash Avenues. After 1889 the firm became known for their office buildings, particularly the 1891 Wainwright Building in St. Louis and the Schiller (later Garrick) Building and theater (1890) in Chicago. Other buildings often noted include the Chicago Stock Exchange Building (1894), the Guaranty Building (also known as the Prudential Building) of 1895–96 in Buffalo, New York, and the 1899–1904 Carson Pirie Scott Department Store by Sullivan on State Street in Chicago.