Ruine Stetten, Medieval castle ruins in Burladingen, Germany.

Ruine Stetten is a medieval castle site in Burladingen whose remaining stone walls stand on elevated ground and offer views across surrounding valleys and forests. The grounds still clearly show the outlines of the former fortification with its basic structural layout.

The castle was probably built around 1275 by the lords of Hölnstein. From 1388 it was sold off in parts, and in 1474 the whole complex passed to Count Jobst Nikolaus I of Zollern. In 1585 Count Eitel Friedrich of Zollern had the tower on the castle site near Stetten demolished; the town of Burladingen repaired the ruin in 1985.

The ruin is also called Holstein, after the Stetten unter Holstein district below it; the name Hölnstein comes from the lords who probably built it around 1275. In 1431 Renhard Nerer, son-in-law of Konrad von Hölnstein, lived in the castle. The site lies above the village on a 817.8 m rock.

The ruin sits on a rock at 817.8 m above sea level east of the Stetten unter Holstein district of Burladingen. Approach on foot from the surrounding area; the site has no facilities, so bring water and wear shoes suited to uneven ground. The preserved ring walls and ditches lie on the ridge, with the remains of the residential tower and vaulted cellar in the core of the complex.

The rock spur bears three caves — a large one, a small one and a through-cave — cut into the site alongside the residential tower with its vaulted cellar. Visitors often walk past these openings without realising they belonged to the fortified complex.