The Château du Landsberg is a castle in the commune of Heiligenstein in the Bas-Rhin département in Alsace, France.
The castle includes a Zwinger with two sets of defensive walls. Construction dates from the 12th, 13th and 15th centuries. The land belonged to the Abbey of Niedersmunster.The castle is privately owned. It has been listed since 1965 as a monument historique by the French Ministry of Culture.
Wikipedia https://en.wikipedia.org/wiki/Château_du_Landsberg
Address 67140, France
Coordinates 48°25'13.472" N 7°25'21.423" E