This Romanesque collegiate church was restored in the 18C. It houses a fine piece of Mosan goldsmithing: the gilded copper and silver reliquary of St Oda and St George (c 1230) in the north transept and a Merovingian sarcophagus (beneath the chancel) bearing the inscription Santa Chrodoar, but which could be that of St Oda. The cloister houses a small Town Archaeological and Religious Art Museum.