The St. Gertrude Collegiate Church is the pride and joy of Nivelles, with its impressive 102m nave with two opposing choirs and its 11th century crypt. This is one of the largest Romanesque churches in the world, an exceptionally handsome, grandiose monument that was consecrated in 1046 by Wazon, Bishop of Liege, before Henry III Emperor of the Holy German Empire.The Collegiate Church is still in use, regularly assembling Christians from the St. Gertrude Parish.You can also visit the crypt, the archaeological basement, the cloister and the central steeple that houses the bells and carillon.The southern turret boasts the Jean de Nivelles jacquemart, a copper warrior some 2.08 m high.The Nivelles Collegiate Church is a must-see. Don't miss it!