Chicago Trolley & Double Decker Co.
The Chicago Trolley & Double Decker Co., simply called Chicago Trolley Co., is a bus tour service based in Chicago, Illinois, United States. It is the largest tour operator in the Chicago area, with a fleet of 45 double-decker buses and tourist trolleys.
The company was founded in 1993 with a small fleet of 8 buses. It has grown to be a Chicago tourist attraction, and corporate businesses and department stores in the city have used Chicago Trolley to promote sales. In 2007, it ranked third (behind Navy Pier and Millennium Park) in terms of the number of tourists it hosted.