The Civic Opera Building is a 45-story office tower located at 20 North Wacker Drive in Chicago. The building opened November 4, 1929, and has an Art Deco interior. It contains a 3,563-seat opera house, the Civic Opera House, which is the second-largest opera auditorium in North America. The opera house is the permanent home of the Lyric Opera of Chicago, and the home of the Joffrey Ballet since 2021.