Genovevaburg, Medieval castle in Mayen, Germany.

Genovevaburg is a medieval castle on a hilltop at the southwestern edge of Mayen, in Rhineland-Palatinate, built in Gothic style with a stone tower known as the Golo Tower. Thick walls enclose the grounds, and inside the fortress you will find the Eifelmuseum, with rooms covering regional history and mining.

Construction began in 1280 under Archbishop Heinrich II von Finstingen to secure Trier's interests against Cologne; the castle was first documented in 1281. It stood intact for 400 years until French troops burned it on 6 May 1689. Philipp Honorius von Ravensteyn rebuilt it from 1690, and from 1707 the Unterburg was added in basalt lava. After 1803 it was sold and partly demolished; Arend Scholten restored it from 1918.

The Eifelmuseum inside the fortress shows exhibitions about the geology and mining traditions of the region, which shaped life here for a long time. Visitors can see how closely the story of this place is tied to the landscape around it.

The fortress is easy to reach on foot from Mayen's town center, though the path up the hill is steep in places. Inside, audio guides are available in several languages, and part of the visit takes you through underground tunnel sections.

The castle's name comes from a legend placing Count Palatine Siegfried and his wife Genevieve of Brabant on this hill; the earliest references linking the legend to the region date to the 17th century. When the castle and its bergfried, the Golo Tower, were first tied to the story is unknown.