High Quality Content by WIKIPEDIA articles! 333 North Michigan is an art deco skyscraper located in the Loop community area of Chicago, Illinois in the United States. Architecturally, it is noted for its dramatic upper-level setbacks that were inspired by the 1923 skyscraper zoning laws. Geographically, it is known as one of the four 1920s flanks of the Michigan Avenue Bridge (along with the Wrigley Building, Tribune Tower and the London Guarantee Building) that are contributing properties to the Michigan–Wacker Historic District, which is a U.S. Registered Historic District.