Marina City is a mixed-use residential/commercial building complex occupying an entire city block on State Street in Chicago, Illinois. It lies on the north bank of the Chicago River in downtown Chicago, directly across from the Loop district. The complex consists of two high rise corncob-shaped 65-story towers (including five-story elevator and physical plant penthouse), at 587-foot (179 m) tall. It also includes a saddle-shaped auditorium building, and a mid-rise hotel building, all contained on a raised platform adjacent to the river. Beneath the raised platform at river level is a small marina for pleasure craft, giving the structures their name. Marina City is notable in that it is the first building in the United States to be constructed with tower cranes.