The Michigan–Wacker Historic District is a National Register of Historic Places District that includes parts of the Chicago Loop and Near North Side community areas in Chicago, Illinois, United States. The district is known for the Chicago River, two bridges that cross it, and eleven high rise and skyscraper buildings erected in the 1920s. Among the contributing properties are the following Chicago Landmark structures:333 North Michigan London Guarantee Building Carbide & Carbon Building Michigan Avenue Bridge 35 East Wacker Mather Tower Tribune Tower