The St. Charles Air Line is a rail line in Chicago, Illinois, partially owned by the BNSF Railway, Union Pacific Railroad (UP), and Canadian National Railway (CN).

Central Station was an intercity passenger terminal in downtown Chicago, Illinois, at the southern end of Grant Park near Roosevelt Road and Michigan Avenue. Owned by the Illinois Central Railroad, it also served other companies via trackage rights. It opened in 1893, replacing Great Central Station, and closed in 1972 when Amtrak rerouted services to Union Station. The station building was demolished in 1974. It is now the site of a redevelopment called Central Station, Chicago.