Château de Dietrich, Historic castle in Reichshoffen, France

Château de Dietrich is a castle in Reichshoffen built in the late 18th century, featuring stone walls and ornate architectural details typical of Alsatian noble residences of that era. The main structure sits within a park landscape crossed by natural waterways.

A first castle, with a roughly circular wall and four round towers, was built in 1232 for the Duke of Lorraine and demolished in 1769. The present château was built for Jean de Dietrich (1719-1795) to designs by Strasbourg architect Joseph Massol, with the main structure erected in 1770-1771 under Christian Gstyr. Around 1807 Mathieu de Faviers removed the passage wing linking the outbuildings, and the east wing was demolished in 1811-1812.

The château now houses the administrative headquarters of the De Dietrich company, the firm founded by the family that built it. Its name recalls Jean de Dietrich (1719-1795), for whom the present building was erected. The south-east dormer once bore the inscription "IFD HANVER 1779", lost during the war.

The château stands at 16, rue du Château in Reichshoffen. It now serves as the administrative headquarters of the De Dietrich company, so the building is not open as a museum; the forecourt, gravel courtyard and park can be seen from the street. The 1770 building has been classified as a monument historique since 1940.

The round tower beside the château is a rebuilt survivor of the medieval castle demolished in 1769; it was reconstructed in 1807 to house a hydraulic lift. The south-east dormer once bore the inscription "IFD HANVER 1779", which disappeared during the war.