The ancestral castle of the Counts of Wölpe was destroyed in the Thirty Years' War.
At the eastern end of Erichshagen-Wölpes in the direction of Celle on the B214, you can still see the artificial mound that once supported the strong castle of the Counts of Wölpe. It was first mentioned in a document in 1151, when Bishop Heinrich of Minden stayed here. Unfortunately, neither a picture nor a drawing of what Wölpe Castle looked like has yet been found.
Wölpe became the official seat when the county was sold to Duke Otto II of Brunswick-Lüneburg in 1302 and the local administration, headed by the Drost, moved into Wölpe Castle. Over the centuries, more and more buildings were erected on the castle hill and even gardens and parks were laid out, as plans from the 17th and 18th centuries show.
In 1859, the Wölpe office was dissolved as part of the reorganization of the offices in the Kingdom of Hanover. From then on, the office buildings stood empty until they were demolished in 1876. The castle hill was planted with trees and is accessible via an access road. Today, it is home to the oldest chestnut tree in the town of Nienburg, which is around 300 years old.