Location
The station was developed as a bus/underground interchange and the main building sits on an island between Southgate Circus and Station Parade where a series of bus stops are located. A secondary building containing shops wraps around the other side of the parade.
The station is located on a hill and whereas the platforms at the stations on each side are on the surface those at Southgate are in a short section of tunnel. The tunnel portals of both ends are visible from the platforms (though not from the same place), a unique occurrence for a deep-level London Underground station. As usual on the Piccadilly Line, the platforms are labelled Westbound and Eastbound. However, the tunnels run roughly north-south at Southgate, so eastbound is northbound and westbound is southbound.
In the early 1980s, moving picture advertising was tested in the tunnels south of the station. The pictures were of a child on a beach turning to face the camera.
Southgate is the northernmost station in tunnel on the London Underground network.
Read more about this topic: Southgate Tube Station