Traveling by train is fun. Brussels has three main train stations: North, Central and South (Midi). If you happen to travel to Belgium from abroad by train, you most likely will end up at Brussels Midi because it is an important European hub and served by Thalys, Eurostar and TGV. Also from Midi, depart busses to the international airport Brussels South in Charleroi. Unfortunately, however, the traveler's first impression of our nation's capital will not be his/her brightest or liveliest.
http://www.brussels.info/train-stations/