This is a rather imposing piece of architecture on one corner of the main square (Grand Place, really a triangle). It irritated me a bit that they've placed a grouping of small trees in the square in front of the church that messes with your ability to get a decent photo of the building without a fish-eye lens or gaining another vantage, e.g. from the Belfort. Nothing particularly spectacular within, but nice enough for a quick stop while you're in the area.

Elise Saint Quentin is a church at the western end of Grand Place. It's a very distinctive looking building of Gallo-Romanesque design, almost in contrast to the nearby Cathedral of Tournai at the opposite end of Grand Place. The building has been around since the 12th century. Due to it's great age and the restoration work over the centuries, the church now has a mix of Gothic and Baroque architectural features, although that's really obvious once you step inside. The isn't especially worth a detour unless you want to see the Saint Quentin reliquary or already in Grand Place.