 It spared the riverfront buildings including the Customs House, the tobacco warehouses, the Governor's Building, the Royal Hospital, and the Ursuline Convent.Colonial officials were to replace the wooden buildings with masonry structures which had courtyards, thick brick walls, arcades, and wrought iron balconies.Among the new buildings were the central New Orleans (now Jackson Square) fixtures of St. Louis Cathedral, the Cabildo, and the Presbytere.