Consecrated in 1046 by Wazon, bishop of Liège in the presence of Henry III, Emperor of the Holy Germanic Empire, the collegiate church is the jewel of Nivelles.

This imposing sanctuary is in Otto-Roman style and stands out because of its unusual layout, having two transepts and two Choirs.

The inside dimensions of the Collegiate church are impressive: the central Nave is 102 metres long, making it one of the longest in the world.

The west end (or west-bau ) consists of an apse, two chapel-galleries and a large high room called the salle impériale (Imperial room) and an octagonal belfry flanked by two towers.

You can also visit the crypt, the archaeological basement and the cloister. The south tower houses the statue of Jean de Nivelles, a little warrior 2.08 metres tall, made from copper.

Several town visits are possible : the old town, Dodaine park, the Museum, Simone Tower or other themed visits on request.