Marina City, mixed-use residential/commercial building complex occupying a city block bound by the Chicago River, North State Street, West Carroll Avenue, and North Dearborn Street, was designed in 1959 by architect Bertrand Goldberg for and completed in 1964.

Marina City was billed as a city within a city, featuring on-site facilities including a gym, swimming pool, ice rink, bowling alley, several stores and restaurants, and a marina beneath the raised platform at river level. The complex consists of two corncob-shaped 65-story, 587 foot tall residential towers, a saddle-shaped auditorium building, and a 13-story hotel building all contained on a raised platform cantilevered over defunct railroad tracks adjacent to the river. The residential floors of the twin towers sit on top of 15-story spiral parking garages. Each unit in the residential towers opens onto a 5.5 meter (18-foot) wide balcony on one of the "petals". When finished, the two towers were both the tallest residential buildings and the tallest reinforced concrete structures in the world.