Actually the tower belongs to the church of St. Julien and is located in the town of Ath, which is located southwest of Brussels and somewhat closer to Mons, in the region of Wallonia.
The church burned down but was rebuilt in the 19th century, keeping the Gothic tower. Also in the tower is the 16th century carillon, which rings out beautiful music.
Ath is best known for its giants - Goliath and his friends. They are celebrated with a museum.