Château Saint-Rémy d'Altenstadt is a ruined castle in the commune of Wissembourg, in the department of Bas-Rhin, Alsace, France. It was one of the four castles protecting the Wissembourg Abbey. It is a listed historical monument since 1989.[1]
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49°01′36″N 7°59′43″E / 49.0267°N 7.9953°E / 49.0267; 7.9953