Burg Weferlingen, Medieval castle ruin in Oebisfelde-Weferlingen, Germany

Burg Weferlingen is a ruined early Gothic moated castle with a triangular layout, a square inner courtyard and a bailey that once completely enclosed the core castle. Its outer walls, with Renaissance-style windows, still stand three storeys high. The 28-metre-high keep, originally 30 metres, measures 12 by 12 metres with walls 2.5 metres thick. The former 10-metre-wide moat is now used as a road.

Burg Weferlingen was probably built in the 13th century by the lords of Hohenlage as a moated castle. In 1316 Duke Albrecht of Brunswick captured it; it later passed to the Halberstadt bishopric, which converted it into a palace around 1500. In the 17th century Prince Friedrich II of Hesse-Homburg had it enlarged, and from 1717 it stood empty, serving as a granary before burning out in late 1929.

The keep is known locally as Grauer Harm or Grauer Hermann. Since 2012 the tower has served as an observation tower, and events are held on the castle grounds. The moat that once held water from the Aller is now used as a road.

The site is freely accessible and situated in a quiet countryside landscape that is easy to explore on foot. Visitors should wear sturdy shoes since the pastures can become muddy and slippery after rain.

The castle's keep is called Grauer Harm or Grauer Hermann. Originally 30 metres high, it now stands 28 metres on a 12 by 12 metre base with walls 2.5 metres thick. After restoration it was opened as a viewing tower, first climbed on the 2012 Day of the Open Monument and officially released on 21 October 2012.