Madison Street Depot (also known as Chicago and North Western Terminal) was unique among Chicago's rail terminals in that it served just one railroad, the Chicago & North Western (even the Illinois Central's Central Station also handled trains of the New York Central's Big Four until fairly recently). In 1971 it was also one of the very few places in the United States where one still could see a forest of semaphores, visible here from an outbound Milwaukee Road commuter train leaving Union Station. Sadly, the headhouse of Madison Street Depot fell to the wrecker's ball in 1984.