Lille Cathedral (Cathédrale Notre-Dame-de-la-Treille) takes its name from a 12th-century figure of the Virgin that has been long revered in the city. The cathedral was built by wealthy inhabitants of the city, starting in the late 19th century; building didn't finish until the 1990s! Sadly, the Virgin is no longer inhabiting the cathedral - she was stolen in 1959, and her church now gets by with a replica.

The cathedral features eight chapels in the neo-Gothic style featuring scenes from the lives of Christ, the Virgin and the saints. There's also a towering organ and, unusually, a great deal of 20th-century stained glass, including an asymmetric rose window.