The Peoples Gas Building at 122 South Michigan Avenue on the corner of Adams Street in the Loop community area of Chicago, Illinois, is a 265-foot (81 m) 21-story office building which was built from 1910 to 1911 and was designed by D.H. Burnham & Company. The building was added to the National Register of Historic Places in 1984, and is also a contributing property for Chicago's Michigan Boulevard Historic District.