Blankenburg Castle

Blankenburg Castle was a small castle in the village of Engehausen in the municipality of Essel in the German state of Lower Saxony. It dates roughly to the 13th century. All that remains are parts of the surrounding rampart. Today a rural farmstead, formerly a manor house, stands on the site of the old castle.

Source: Wikipedia (CC BY-SA 4.0) — https://en.wikipedia.org/wiki/Blankenburg_Castle_(Essel)