The ruins of Grillenburg Castle are located east of the Sangerhausen district and state-approved resort of Grillenburg.

Grillenberg was first mentioned as early as the 9th century in a directory of the Hersfeld monastery as a place „Coriledorpf“ subject to tithes. In 1217, today’s ruins were first mentioned in documents as „Burg Grellenberch“, which served to protect the Sangerhäuser Mulde. The use of brick as a building material is particularly noteworthy.
In a feud in 1361, the castle and the town were captured by the Count of Mansfeld, who had to give everything back just one year later. During the siege of the castle, the local farmers suffered great damage, so that they were exempted from all services and duties for three years.
In 1366, the castle came into the possession of Duke Magnus of Brunswick. From 1485 to 1547, the castle was given as a fief to the von Morungen family and then reverted to the Saxon office of Sangerhausen. It is assumed that the castle slowly fell into disrepair after this time but was still inhabited at times.
Grillenberg was affected by the witch hunt from 1607–1614. Dorothea Krause was caught up in a witch trial and was burned to death in 1608. In 1614, a woman resisted torture twice and was expelled from the country.
The best starting point for a hike to Grillenburg Castle is the parking lot at the forest pool in Grillenberg. From there, follow the signposted hiking trail to the castle ruins.
