The Wilaya Building (Arabic: مقر ولاية الدار البيضاء الكبرى Hall of the Wilaya (Province) of Grand Casablanca, locally known as مقر الولاية Maqarr El-Wilaya or just El-Wilaya)[2] is the building that houses the administration of Grand Casablanca.[3] It was designed by Marius Boyer and built from 1928-1937 during the French Protectorate in Morocco.[3] The building is located at Muhammad V Square in central Casablanca, Morocco, and it remains an emblematic building of the city's architecture.