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 (Métropole Européenne de Lille), France, that opened in August 2012. It has a seating capacity of 50,186 and is the home stadium of Lille OSC. Initially named Grand Stade Lille Métropole, the stadium was renamed on 21 June 2013, just after the death of the former Mayor of Lille and former Prime Minister of France Pierre Mauroy (1928–2013). From Wikipedia
