Burg Hohenstein, Medieval castle in Hohenstein, Germany

Burg Hohenstein is a ruined hilltop castle on the Schwäbische Alb, at 785 m above sea level near Oberstetten in the municipality of Hohenstein. The complex consists of a outer bailey and a core castle; the southeast corner of the core castle's tower still stands. The bergfried measured 8.05 by 6.80 metres, stood about 13 metres high, had a high entrance at 9 metres and walls 2.1 metres thick.

Burg Hohenstein was built at the end of the 11th century by the lords of Hohenstein and first appears in the Zwiefalten chronicles around 1100. These wealthy high-medieval nobles administered, governed, collected taxes and held court from the castle, and margraves of Baden twice attended court festivities there. It was enlarged around 1300, destroyed in 1408 and already uninhabited by 1438; the counts of Zollern and Kaib von Hohenstein are named as later owners.

The castle grounds host regular readings, music and theatre performances. The Hohenstein family held court festivities here, attended twice by margraves of Baden. The site is now used for open-air cultural events among the ruins.

The ruin stands on a hill at 785 m above sea level near Oberstetten, in the Hohenstein municipality of the Reutlingen district. The site was secured between 1983 and 1985, so the surviving walls can be approached; expect uneven ground on the hilltop. The southeast corner of the core castle's tower still stands.

The castle was already uninhabited by 1438, after its destruction in 1408; the counts of Zollern and Kaib von Hohenstein are named as later owners. Extensive stabilisation work was carried out between 1983 and 1985. The southeast corner of the core castle's tower still stands.