For all those who love steam engines, this is a place that should not be missed: the Living Railway Museum, which is located in the former SNCF engine shed in Longueville, at the heart of Seine-et-Marne. In this site, preserved by members of the AJECTA club (Youth Association for Maintenance and Conservation of Old Trains), dozens of gleaming vehicles await visitors. The oldest steam engine, a Jean-François Cail et Cie, once belonged to the Compagnie des chemins de fer du Nord, and dates back to 1866. It sits alongside a 1901 Schneider, a 1916 North British, and a 1943 Davenport, as well as diesel locomotives and luxury cars from the Roaring Twenties. 

The building that houses the Living Railway Museum, a wooden engine shed from 1911, is listed as a historic monument. This "living" gallery truly is, as some of the pieces on exhibit are used for films and historical re-enactments. Better yet, the AJECTA regularly takes part in events (such as the Heritage Days), during which these "old ladies," restored and in perfect working order, are warmed up to allow the public to come aboard the traditional steam engines.