Built between 1784 and 1787, the Hotel de Crosne is the last testimony of the architecture of the Ancien Régime in Rouen. Originally owned by a councillor in the Parliament of Normandy, named Philippe Auguste Morin d'Auvers, the Hotel de Crosne was acquired by the State in 1852 for the needs of the armies. Headquarters, then command hotel, the hotel of Crosne houses, until 1999, the seat of the departmental military delegation. It has been the seat of the Rouen administrative court since 2008.