The ruins of Thurant Castle stand on a wide hill spur made from slate above the villages of Alken on the Moselle in Germany. The castle is located within the county of Mayen-Koblenz in the state of Rhineland-Palatinate) and belongs to the spur castle type. Next to the castle which stands on a steep shoulder of the valley are vine gardens on the sunny side.
From the mid-13th century the archbishops of Cologne and Trier were joint owners of the site and had their respective property managed by burgraves. As a result, each half of the castle had its own bergfried, living and domestic buildings and a separate entrance.