Besançon has the particularity of being surrounded by seven hills, on each of which towers a fort. In the historic district of la Boucle in Besançon, you can see many Gallo-Roman relics such as the Porte Noire of the 2nd century, the Square Castan and the Arena. In the cathedral of Saint John, the Astronomical clock has 70 dials! Several times a day, depending on the calendar and the time, automated figures and solar system animations bring the clock to life. To discover Besançon from a different viewpoint, try the tourist boat on the Doubs.