Burg Staufen, Medieval castle ruins in Hilzingen, Germany.

Burg Staufen is a castle ruin perched on a volcanic mountain in the Hegau region, rising to about 594 meters above the surrounding landscape. Parts of the original ring wall remain visible, forming the main structures that visitors can still see today.

From about 1269 the hill and castle were held as a fief by the lords of Homburg, partly under the counts of Hohenberg, whom the dukes of Austria replaced in 1381. In 1499 Swiss Confederates burned the castle during the Swabian War. In the Thirty Years' War troops of Konrad Widerholt, commander of Hohentwiel fortress, demolished the interior and in 1638 the buildings; in 1641 and 1644 the ruined castle served as headquarters for the besiegers of Hohentwiel.

The name Staufen comes from the cone-shaped hill of the same name, which gave the castle its name. From around 1269 the hill and castle were held as a fief by the lords of Homburg, partly as a fief of the counts of Hohenberg. In 1641 and 1644 the demolished castle served as headquarters for the besiegers of Hohentwiel Fortress.

The ruin is reachable by hiking trails starting from Hilzingen, and the walk offers views of nearby castles including Hohentwiel Fortress. Proper hiking shoes are recommended since the paths are steep and can be uneven in places.

After the demolitions of 1638, the ruined castle served again in 1641 and 1644 as headquarters for the besiegers of Hohentwiel Fortress. Its stone was later quarried by locals for building material, which is why only stretches of the ring wall and some unstable building remains survive.