The castle was left in ruins for many years. In 1885, it was bought by the Bishop of Strasbourg through the mediation of a M. Stumpf who wanted to build a chapel dedicated to Saint Leo. The remains of the keep were destroyed and the chapel was built in its place, the works being carried out by the architect of historic mounments, Charles Winkler. The chapel was completed in 1895. Winkler also restored the residence at the south of the site which had been rebuilt, with mullioned windows in the 16th century. He added a staircase turret and a neo-Renaissance balcony.