Ok, so I will also send a pic from one of my (few) real games.
(http://i54.tinypic.com/33uslcg.png) (http://i54.tinypic.com/33uslcg.png)
This is the underground central station of the most strategic city in the map, where most of the express lines meet. It features a subway station too.
This is a better explanation:
The station is 2-layered.
At level -1 there is the westbound terminus (central 2 platforms), the main through tracks E-W (at their side) and the S-E through tracks (at the extern) and the subway platform at the southernmost side, for a total of 6 platforms + 1 for subway (which network is not connected to the main network).
(http://i54.tinypic.com/314cfba.png) (http://i54.tinypic.com/314cfba.png)
At level -2 there are the eastbound and the southbound terminuses (3 platforms each), loop tracks for the S-E trains, and the S-W through tracks.
(http://i55.tinypic.com/abnfac.png) (http://i55.tinypic.com/abnfac.png)
At level -3 the subway underpass
(http://i52.tinypic.com/16kb0vq.png) (http://i52.tinypic.com/16kb0vq.png)
This is the surface level:
(http://i56.tinypic.com/dcx9vb.png) (http://i56.tinypic.com/dcx9vb.png)