Wildenstein Castle, Medieval castle in Bubendorf, Switzerland.

Wildenstein is a hilltop castle south of Bubendorf, in a side valley of the Hinteren Frenke. It is one of only two surviving hill castles in the Basel-Land region, alongside the castle complex in Burg im Leimental. A footpath leads from Bubendorf station to the castle in about an hour.

In 1293 Heinrich von Eptingen took the name "von Wildenstein". Under his son Gottfrid, the castle was stormed in 1334 by Bern and Solothurn forces after a breach of the peace; the extent of damage from that and the 1356 Basel earthquake is unknown. In 1380 Henmann von Eptingen sold it to the von Baden siblings, and in 1594 the Rappenkrieg was settled peacefully nearby. The canton of Basel-Land acquired it in 1995.

The name Wildenstein was adopted by Heinrich von Eptingen in 1293, and the castle stayed in noble hands for centuries before changing owners repeatedly. Near the castle, the Rappenkrieg was settled peacefully in 1594. Since the canton of Basel-Landschaft bought the site in 1995, cultural events have been held there regularly.

The property is open to visitors through guided tours and scheduled cultural events, as the local council made it accessible to the public. It is helpful to check the event calendar ahead of time, since access follows the cultural programming schedule.

Wildenstein is one of only two surviving hill castles in the Basel-Land region, alongside the castle complex at Burg im Leimental. The walk from Bubendorf station to the castle takes about an hour. In 1594 the Rappenkrieg was settled peacefully near the castle.