Cathédrale Notre-Dame de la Treille

The Basilica-Cathedral of Notre-Dame de la Treille stands on Place Gilleson in Lille, and its own website is run by the Diocese of Lille. Besides services, it hosts ticketed public events. These include a solidarity concert on 20 November 2026 featuring Mozart's Requiem, Ave Verum and Misericordias Domini, performed by the La Cantarella choir and the Arcangelo orchestra with more than fifty musicians, organised by a Rotary club for charity. The cathedral also presents a video-mapping show and an exhibition at its Centre d'Art Sacré.