Esch-sur-Sûre Castle (Luxembourgish: Buerg Esch-Sauer; French: Château d'Esch-sur-Sûre; German: Burg Esch-Sauer), now a ruin, is located on a spur in the small town of Esch-sur-Sûre in the north-west of Luxembourg. It is naturally protected by a sharp meander in the River Sûre which surrounds the town and the castle on three sides.
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