This complex includes the four-story Exchange (1899), housing live-stock firms and the Stockyards Inn. A plain office building with a brown brick base and three upper stories of red brick, it was originally dressed up by a triple round-arch entry below four three-story Ionic columns supporting a curvilinear, scrolled parapet. Nearby, at East 46th Avenue and Humboldt Street, is the National Western Auditorium (1909), a two-story, parapeted red brick oval structure with an entry pavilion distinguished by curtain window walls. Augmented by numerous additions, including a major 1993 expansion, the complex houses the National Western Stock Show, a celebration of Denver's cow town heritage, for ten days every January.