Heuberg Castle Ruin: A Medieval Hilltop Fortification in Switzerland
Site at a Glance
- Rating
- 4.8
- Popularity
- Very Low
- Country
- Switzerland
- Primary era
- Medieval
- External website
- Open
- Eras represented
- Medieval
- Civilizations
- Holy Roman Empire
- Site type
- Military
- Remains
- Castle
History
Heuberg Castle Ruin is a former hilltop castle in Switzerland, near Schönenberg in the canton of Thurgau. Built on elevated ground, such a castle used the natural terrain to support defense and visibility. Almost nothing is known about the castle’s history, while the name Heuberg also survives as the local field name.
Early and Medieval Associations
Bronze Age finds have been made at the site, providing evidence of earlier human activity on the ridge. In the medieval period, Heuberg had visual contact with Last Castle. This relationship has led to the view that Heuberg may have been established by the inhabitants of Last Castle, identified with the Lords of Schönenberg.
The Lords of Schönenberg served the Bishop of Constance, the senior ecclesiastical ruler of a major medieval church jurisdiction whose authority extended across parts of the region. Heuberg Castle Ruin, together with the ruins of Last and Anwil-Buhwil, now forms part of the Kradolf-Schönenberg Ruins Trail.
Remains
Heuberg Castle Ruin occupies a fairly broad ridge running from south to north on a slight rise south of Schönenberg village. Only rudimentary wall remains survive. A partly artificial ditch separates the southern side of the castle site from the next elevation, indicating how the ridge was adapted to strengthen the enclosure.
The elongated castle enclosure was bordered at its foot by a narrow path. The ridge falls eastward toward a vineyard and westward toward a steep wooded slope. To the north, it continues into a lower vineyard plateau that drops steeply on both sides and narrows to a point. These natural slopes, together with the ditch and the raised position, shaped the castle’s defensive setting.

