Capellen has a well-attended art gallery and an international gendarmerie- and police museum.

Archaeology enthusiasts could be interested in the 4th century brick kiln in Capellen. Furthermore, they will definitely like the thermal baths at the foot of Tossebierg that belonged to an important vicus (Gallo-Roman village). After all, today's community was once situated on top of the great Roman road between Reims and Trier.