Burg Wildenstein, Medieval castle ruins in Bad Ischl, Austria

Burg Wildenstein is a ruined fortress standing on a rocky ridge near Bad Ischl, featuring stone remnants of towers and defensive walls with gothic details. The site shows clear traces of medieval construction techniques and architectural styles common to Alpine castles.

Wildenstein is first documented in 1392 as a fortress, though its construction is thought to date to the 13th century. From 1419 it belonged to the Habsburgs and housed princely (from 1452 imperial) administrators who governed the Ischlland, the core of the later Salzkammergut salt administration. A devastating fire broke out on 28 August 1593, and a second blaze in 1715 destroyed the castle entirely; it was never rebuilt, and the administrative office moved to Reiterndorf in 1717 and later to Goisern.

The name Wildenstein, "wild stone", suits a ruin on a rock spur of the Katrin. From 1419 the castle was held by the Habsburgs and housed the ducal, later imperial, administrators of the Ischlland, the district around Bad Ischl. Their office moved in 1717 to Reiterndorf and later to Auböckplatz 1 in Ischl, and from 1770 to Goisern, to a seat called Neu-Wildenstein.

The ruins are reachable year-round via hiking trails that start from Bad Ischl and take several hours to traverse. Sturdy footwear is important since the path crosses uneven ground and rocky sections.

The 1593 blaze was not the end: the castle burned again in 1715 and was never rebuilt. Its administrative office moved to Reiterndorf in 1717, then to Goisern by 1770 as Neu-Wildenstein. Since 2009 the Ritterbund Raubritter zue Wildensteyn has helped maintain the ruin.