Splügen Castle

Splügen Castle is a medieval castle ruin in the Rheinwald forest that stands on a small hill beneath the former valley road, featuring Gothic archways and walls exceeding 1 meter (3 feet) in thickness. The structure displays multiple levels with substantial stone walls and recognizable residential compartments.

The structure was built around 1275 by the Freiherren of Vaz to protect their territory from advancing Walsers and Misox clans. Its rapid decline reflects the shifting power dynamics that quickly made the stronghold unnecessary for local defense.

The multi-level structure reflects medieval Swiss building practices with its elevated entrance, narrow window openings, and preserved residential spaces on upper floors. These features point to its role as a fortified residence for local rulers who controlled the valley.

The ruins can be reached through a short walk from Splügen village, as vehicles cannot access the site. The path is manageable for casual walkers and allows exploration of the surrounding forest area.

By 1308, the fortress had already declined to a farmstead and ceased functioning as a defensive stronghold, marking one of the briefest operational periods for a Swiss castle. This unusually short lifespan reveals how rapidly local circumstances could shift in medieval times.