This visit traces the evolution of the fortifications of the Citadel of the Middle Ages in the 19th century to understand a unique defense system. Your guide will take you through pregnant and emblematic places usually closed to the public. Provide sneakers and torch lamp. Non -refundable visit, non -exchangeable. Hours of operation : Sunday August 06: 15:00:00 at 5:00:00:00 Sunday July 23: 3:00:00:00 PM at 17:00:00 Sunday July 30: 15:00:00 at 5:00:00:00 Sunday July 16: 3:00:00:00 PM at 17:00:00 Sunday 09 July: 15:00:00 at 17:00:00 Sunday August 27: 3:00:00:00 PM at 15:30:00 Sunday August 13: 3:00:00:00 PM at 17:00:00