Beneath the Tour Montparnasse, this square is named for the date of the radio speech Charles de Gaulle broadcast from London urging the French to resist the Germans after the Nazi invasion of May 1940. It was here that German military governor Dietrich von Choltitz surrendered to the Allies in August 1944, ignoring Hitler's orders to destroy the city as he withdrew. A plaque on the wall of what is now a shopping center -- originally the Montparnasse train station extended this far -- commemorates the event. Métro: Montparnasse Bienvenüe.