The castle is located on an slightly elevated plateau just south of the historic Flechtorf town center.

It lies between the Schunter River and a small canal used to transport water for a mill and was also surrounded by a moat.

Part of the royal house dating to the 16th century, built by Duke Wilhelm the Younger, which has a stone ground floor and an attached half-timbered structure, is still standing.

[1] The two dukes fought against the Bishop of Hildesheim, Otto I, and captured 70 of his knights and vassals in the castle.

It returned to private ownership in 1875 and in 1932, it was used as a school for the Hitler Youth, but was closed after one year due to lack of funds.