Overlooking the town, the late-Renaissance Schloss Wilhelmsburg was conceived by Landgrave Wilhelm IV of Hessen as a hunting lodge and summer residence in the 1580s. Since then, it has largely kept its original design, with lavish murals and stucco decorating most rooms, of which the Riesensaal , with its coffered and painted ceiling, is the most impressive. The playfully decorated Schlosskirche has a rare wooden organ, thought to be the oldest working organ of its type in Europe.
