The Lille Stadium, with over 50 000 seats, was designed in a way so that the communication with the exterior would be possible, using lighting and screens in its facade. The stadium possesses a retractable roof that can open and close in 15 minutes, depending on climate conditions. Also, so that the stadium could have multiple functionalities, half of the pitch sits on top of a hydraulic elevator, that when raised, covers the remaining half of the pitch and exposes another pitch-level area with extra seating spaces.