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Origin and history

The house at 11 Poincaré Street in Rouffach, Haut-Rhin, has been a historic monument since 1929. Built in the 1st quarter of the 17th century, it features a stone-carved dressing, adorned with rinceaux, grimaçant masks and antelots, although its coat of arms was staked. Inside, a 17th-century sandstone staircase, panelling, a baroque stucco ceiling (restored in 1897), and a fireplace dated 1733 with alleged Landenberg weapons testify to its rich past.

The main building, erected around 1660 by the clerk Pierre Hildenbrandt, incorporates remains of an earlier construction (XVI century), such as a moulure door and a floor ceiling. In 1718, the property was acquired by the knights of the Teutonic Order, who carried out major transformations there around 1735 (cage d'escalade, salons). The wooden coat of arms of the lodge belonged to Hochmeister Franz Ludwig von Pfalz-Neuburg, Landkomtur Johann Franz Freiherr von Reinach, and Commander Hans Sebastian Vogt von Altensommerau.

A project of expansion was envisaged in 1751 by architects Peter (Colmar) and Johann Caspar Bagnato, then executed after 1757, probably under the direction of his son Franz Anton Bagnato. Sold as a national property during the Revolution, the building will house a muslin factory in 1810, then the Saint Joseph Institution (school run by the Ribeauvillé sisters) from 1850. A neo-Gothic chapel was added in 1896, completing the architectural ensemble.

In the 20th century, the 18th century wing was raised on the courtyard side. Today, the house retains remarkable elements such as its carved dressing room, its sandstone staircase, and its baroque interior decorations, reflecting its turbulent history, between bourgeois residence, religious property, and school.

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