Musée d'Orsay © RMN-Grand Palais / Hervé Lewandowski

Cirque Impérial in Paris, building the main façade, drawing by Jacques Ignace Hittorf

A veritable circular urban monument, the circus built by the architect Hittorff in 1841 became the architectural model for all permanent circuses built later in all the major cities of France. It is protected as historic monument.