[cornichon622]

Hi, yes the Gare du Nord (ie North Train Station) mainly has trains going to the north. For the south, you'd have to go to the Gare de Lyon, Lyon being a city in southern France :)

[netsharc]

In Moscow there's the Kazansky, Yaroslavsky and Leningradsky stations. They're next to each other but serve lines going to different cities.

[madcaptenor]

From Leningradsky station you can go to St. Petersburg (formerly Leningrad); unsurprisingly, that train arrives at Moskovsky station.