The Stade Pierre-Mauroy, also known as the Decathlon Arena – Stade Pierre-Mauroy for sponsorship reasons, is a multi-use retractable roof stadium in Villeneuve-d'Ascq, Metropolis of Lille, Northern France, that opened in August 2012. With a seating capacity of 50,186, it is the fourth-largest sports stadium in France and the home of French professional football club Lille. Wikipedia