The remains of the Castle can be visited
Niederburg Castle

The Niederburg castle ruin, once the ancestral seat of a noble family, sits on a rock in the Lieser Valley in Rhineland-Palatinate. Its strategic location below the Oberburg, separated by the small Lieser river, made it an important control point for regional traffic.
History+
The first documented mention of Niederburg occurred in 1173, although some sources also cite 1133. It served as the ancestral home of the Lords of Manderscheid, who, as bailiffs of Echternach Abbey, ruled over large parts of the Eifel region. Under Wilhelm V von Manderscheid, the castle underwent expansion of its fortifications. Between 1346 and 1348, it withstood a siege by the troops of Elector Balduin of Trier. In 1457, Dietrich III von Manderscheid was granted the title of Imperial Count.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Rainer Gindele
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 50.0915, 6.8176