300 North State Street
Chicago, IL 60654
+1 312 744 8000 (Tourist Information)
Affectionately known as the "Corn Cobs", this city is a "city within a city" and it offers almost as many services just short of being a municipality on its own. The building is divided into condominiums and there is a marina underneath the buildings which gives them their name. When the "city" was completed in 1964, the complex had its own theater, ice rink, bowling alley and used to house many television stations. Today, those structures have been modified or destroyed to make room for the House of Blues, Smith & Wollensky, and other additions/detractions. However, the towers remain an impeccably designed, mixed-use development and a prototype for how urban planning should be done.