Burg Wartenberg, Medieval castle ruins in Angersbach, Germany.

Burg Wartenberg is the ruin of a spur castle built around 1220 by Friedrich von Angersbach on a flat rock spur at 268 m above sea level, within a loop of the Lauter river about one kilometre east of Angersbach. The surviving remains include the bergfried and sections of the inner ring wall.

The castle was built during the Middle Ages to serve as a strategic fortification for monitoring and controlling the surrounding Hessian territories. It formed part of a wider network of defenses that helped regulate power and movement across the region.

The ruins stand as a protected cultural monument, representing the role such fortified sites played in medieval Hessian society. Visitors can observe firsthand how the castle was built and positioned within the landscape of its time.

The ruin sits on a flat rock spur in a bend of the Lauter, about one kilometre east of Angersbach. The site is a protected monument, so stay on the paths and do not remove stones. The ground is uneven, and the slope up to the spur is steep in places.

From the ruin, you can observe the Hessian landscape and understand why this location held such strategic value. The elevated position reveals how those who ruled could monitor the lands below and maintain their authority across the region.