Here are a few suggestions for your next trip from Sy(B)

In 2 hours, you can reach Liège, Brussels, Anderlecht, Schaerbeek, Namur, Leuven, Molenbeek-Saint-Jean, Ixelles, Uccle.

In 3 hours, you can reach Luxembourg, Antwerpen, Gent, Köln, Schifflange, Charleroi, Bettembourg, Pétange, Diekirch, Düsseldorf...

In 4 hours, you can reach Amsterdam, Paris.