Burg Borghausen, Medieval castle ruins in Attendorn, Germany

Burg Borghausen is a castle ruin situated on a rocky outcrop northwest of Attendorn that dates to the 12th century. The site sits at an elevation of around 288 meters and consists mainly of foundation traces and scattered stones.

The castle was built in the 12th century as part of the medieval fortifications in the region. It was destroyed in 1632 during the Thirty Years War by forces from Hesse and Sweden.

The name Borghausen is shared with the farm and estate in the Repetal below the rock, which had its own moat, visible in the 1831 Urkataster and the 1840 Uraufnahme; the estate lay on the ground of today's Borghausen sewage treatment plant. The castle itself is not the same as Burg Babenohl, an identification the sources do not support. The ruin, with its section rampart, has been on the Attendorn monument list since 1987.

The site is only accessible on foot and requires sturdy footwear due to uneven ground and rocky formations. Visitors should be aware that wheelchair access is not possible and a reasonable level of fitness is needed.

Over centuries, locals collected stones from the castle and reused them for their own buildings and constructions. This gradual dismantling left only the deeper foundations visible, along with scattered rock formations.