In Paris, there are two large train stations close to each other, but still separate and at a walking distance: "The (train) station of the North" - Gare du Nord, and "The (train) station of the East" - Gare de l'Est.
Now, you might think maybe one of them faces North and the others faces East, so that trains don't have to make the turn, or something (I still don't see why the couldn't have two platform areas as part of the same station even in this case) - but they both face North-North-East.
So what's the logic of having both these stations? I'm guessing there's some historical, rather than technical, reason for this. Also, is it fair to assume that trains travelling from/to East of Paris will always stop at Est and trains travelling from/to North of Paris will always stop at Nord?