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Koordinaten: 52° 6′ 39″ N, 4° 25′ 8″ O
The Kasteel Duivenvoorde in the town of Voorschoten close to Vassenaar, is one of the oldest castle in Zuid-Holland. It was first mentioned in 1226. The first five centuries, the castle was owned by family Van Duvenvoirde part of the House of Wassenaer.