Know Before You Go
In the market at the bottom of the Cathedral hill at 140 Grande Rue is Victor Hugo's Birth House. There is an interesting late 19th-century canal tunnel (a shortcut for the loop of the River Doubs) that goes under the citadel. It serves canal boats and along one side is a pathway for cyclists and pedestrians. The cathedral is closed on Tuesdays from April 1 to September 1 and every Tuesday and Wednesday from October 1 to march 31. It’s also closed during January, on May 1, on November 1 and 11, and on December 25.