Burg Wallenfels, Medieval castle in Siegbach, Germany

Burg Wallenfels is a ruined hilltop castle on a steep 498-metre cone east of the village of Wallenfels in the Siegbach municipality. Excavations in 1986–1988 found an oval ring wall, a neck ditch crossed by a bridge on the east, a presumed keep and hall on the west, a well to the northeast and two buildings against the south wall. Only the ditch, faint foundations and a rubble mound remain.

The castle was built in the early 14th century to serve as a fortress for the local lords. In the 15th century it was abandoned and its stone materials were taken to construct the nearby Burg Tringenstein.

The castle shows how medieval nobles in this region built their strongholds to display power and control the land around them. Hilltop locations like this one were chosen specifically to watch over the valleys below.

The ruins sit on a hilltop and are reached through a path that connects local walking routes in the area. Visitors should wear sturdy shoes since the ground is hilly and some approaches can be steep.

The castle's name survives in the landscape: field names such as "Unter der Brücke" and "Portwiese" below the hill still recall the former gate and bridge, although no walls stand there today. Excavations between 1986 and 1988 located the ring wall, the presumed keep and a well whose remains were still visible in 1987.