Isenbourg Castle

Since Merovingian times, the hill hosted a castle occasionally occupied by rulers such as King Dagobert II. In the Middle Ages, a large fortress was built here, visible in old city engravings. Bishops Conrad de Lichtenberg (1273-1299) and Frédéric de Blankenheim (1375-1393) played key roles in its completion and development, making it a stronghold to protect the city's defenders. Later, Archduke Leopold V of Austria, also Bishop of Strasbourg and Lord of Rouffach, carried out major works. In 1657, Bishop François Egon de Furstenberg resumed construction, interrupted by the ravages of the Thirty Years' War, but could not complete it. The site was sold as national property during the Revolution and dismantled by private individuals. A new building was erected in the early 19th century, then fully restored around 1885 by Xavier Ostermeyer. Some medieval vaulted cellars still remain today. The site is now part of a luxury hotel chain.