The Basilica of Notre-Dame de la Treille is a Roman Catholic church located in Lille, France. Construction began in 1854, and it was completed in 1999. The basilica is known for its striking neo-Gothic architecture and its unique façade, which features a large, modern stained-glass window. Inside, the basilica houses a revered statue of the Virgin Mary, known as Notre-Dame de la Treille, which has been a site of pilgrimage for many. The interior is adorned with beautiful chapels and artwork, making it a significant religious and cultural landmark in the region.