Spiral staircase at La Conciergerie, Paris. Former royal palace and prison in on the Île de la Cité, it is part of the larger complex known as the Palais de Justice. Built in the Middle Ages as a Merovingian Palace.
Paris is stunning! The wildly gorgeous interior of the Church of Saint Etienne du Mont in the Latin Quarter. The steps of this church are used in Woody Allen's movie "Midnight in Paris" - but the interior is definitely worth seeing!