Motte-and-bailey castle
The first castle was built before 1100 on a hill in the middle of the village of Attinghausen. Virtually nothing is known about the first owners of the castle, although they were probably knights in the service of the Counts of Zähringen and they may have used the name von Attinghausen. By the 13th century, the original owners were gone from the castle and the von Schweinsberg family had come to own it, possibly through Ulrich von Schweinsberg marrying a daughter of the original Attinghausens. The original castle was probably a Motte-and-bailey castle which was spread across the hilltop.