 It encompasses the entire Illinois Center and Lakeshore East is the latest lead-developer of the 1969 Planned Development #70, as well as separate developments like Aon Center, Prudential Plaza, Park Millennium Condominium Building, Hyatt Regency Chicago, and the Fairmont Hotel.The area has a triple-level street system and is bisected by Columbus Drive.Most of this district has been developed on land that was originally water and once used by the Illinois Central Railroad rail yards.