Burg Falkenstein, Medieval castle ruins near Pfronten, Germany

Burg Falkenstein is a ruined hilltop castle near Pfronten in the Allgäu region of Bavaria, sitting on a rocky ridge at a considerable height. What remains today includes sections of the outer walls, foundations, and parts of the tower that still define the outline of the original fortification.

The castle was probably built in the 11th century; the first secure record dates from 1129, when a Rudolph von Valchenstein appears as a witness in an agreement between the bishops of Regensburg and Bamberg. That same year Duke Henry X the Proud besieged the stronghold, called castrum fortissimum in the sources, and took it in 1130 without destroying it. Ownership passed often, and after 1242 the county of Bogen fell to the Wittelsbach dukes.

The name Falkenstein refers to the falcon rock on which the fortress was built, a name that still echoes through the local villages below. Visitors walking among the remaining walls can get a sense of how much ground the old fortification once covered.

The path up starts from Pfronten and is clearly marked, though the final section becomes steep and rocky. Sturdy footwear is a good idea, and extra care is needed when the trail is wet.

The castle sits on a granite rock at 626 m above sea level, about 60 m above the Perlbach valley floor. On clear days the tower view reaches as far as the Großen Arber to the east. The first documented mention dates from 1129, when a Rudolph von Valchenstein appears as a witness in an agreement between the bishops of Regensburg and Bamberg.