Kong Asgers Høj (King Asgers Mound) is a large passage grave on the island of Møn. It was built in the Late Stone Age (3000 BC - 1500 BC) and has a 10 meters long narrow passage leading into to the grave chamber. The grave chamber is 10 meters long and 2 meters wide and was when in use a common grave. When somebody died the grave was opened, the deceased was buried, and the grave was closed again. Kong Asgers Høj is situated to the Northwest of Sprove on a small hill. The passage grave is open to the public, but it is a good thing to bring some sort of light because the grave chamber is pitch-dark.
Krickenbeck moated castle is one of the oldest on the lower Rhine. Its history dates back to the year 1104, when the castle was first mentioned. It is unclear why the old castle, which was certainly inhabited by Count Reginar, was abandoned or destroyed. In the mid-13th century the castle was moved to the current location. At the end of the 14th century the new castle belonged to the Counts of Kleve.
Johann Friedrich II of Schesaberg converted the castle into a Baroque mansion between 1708-1721. On September 7, 1902, a fire destroyed the entire mansion. From 1903 to 1904, a three-winged castle was built in the Neo-Renaissance style. Today Krickenbeck is a conference center.