Despite its scale and dominance, there's no denying the beauty of Anholt Castle. Dating back to the 12th century, the moated fortress is located in Isselburg, western Germany, and was partly destroyed during the Second World War. As part of the reconstruction efforts, the castle was turned into a 16,145-square-foot (1,500sqm) museum. Home to Baroque gardens, Old Master paintings and important Renaissance furnishings, this captivating castle also has a Marble Room and an eerie dungeon.