 The old Pont Notre-Dame collapsed in 1499.To build a new bridge, an Italian architect who had worked on the Renaissance-style châteaux at Amboise and Blois, Giovanni Giocondo, was brought to Paris, and he constructed the new bridge with rows of houses all in the same style, one of the first examples of Renaissanace urbanism in Paris.The old Louvre fortress was finally demolished and replaced by a palace in the Renaissance style.