Ranked by strength
The 8 strongest castles in Switzerland
Switzerland’s mightiest fortresses — the strongholds built to hold against siege, ranked by military strength rather than fame. Each links through to its full history, and you can rebuild any of them to explore with AI.
- 1
Switzerland · Restored · prime 1270
Chillon Castle
Chillon Castle is a medieval island fortress on a small limestone rock in Lake Geneva between Montreux and Villeneuve. Built and expanded from the 11th century onwards, it served as a residence, prison, and garrison and today is a restored historic monument and museum of regional significance.
- 2
Switzerland · Ruin · prime 1450
Tourbillon Castle
Tourbillon Castle is a medieval hilltop castle in Sion, Valais, Switzerland, built at the end of the 13th century for the bishops of Sion. It was burned and rebuilt several times, later ruined by fire in 1788 and conserved as a monument in the 19th century. The site today survives as reinforced ruins atop a steep rocky plateau above the town.
- 3
Switzerland · Restored · prime 1673
Aarburg Castle
Aarburg Castle is a medieval fortress perched on a steep rocky ridge above the town of Aarburg in the canton of Aargau, Switzerland. Built around the 13th century and expanded in the 16th–17th centuries into a large baroque fortress, it dominates the narrow crossing of the Aare River and today houses a cantonal youth institution.
- 4
Switzerland · Partial ruin · prime 1250
Habsburg Castle
Habsburg Castle is a medieval Swiss fortress near the Aar River in the canton of Aargau that became the original seat of the House of Habsburg. Built around 1020, its large and small towers and a 13th-century residential block survive while much of the eastern complex lies in ruin; parts now host a restaurant and a small exhibition.
- 5
Switzerland · Still standing · prime 1436
Thun Castle
Thun Castle is a medieval castle on a hill in the city of Thun in the Swiss canton of Bern. Built at the end of the 12th century, its large white keep with tall Knights' Hall and later Gothic residential wing now houses the Thun Castle museum and is a Swiss heritage site of national significance.
- 6
Switzerland · Still standing · prime 1435
Valère Castle
Valère (Basilique de Valère) is a fortified church complex and former castle on Valère hill above Sion in the canton of Valais, Switzerland. The site combines a Romanesque-Gothic basilica with surrounding curtain walls, towers and a fortified village and contains one of the world's oldest functioning pipe organs.
- 7
Switzerland · Restored · prime 1544
Laufen Castle
Laufen Castle (Schloss Laufen) is a medieval castle on a limestone crag above the Rhine Falls in Laufen-Uhwiesen, canton of Zurich, Switzerland. It is a Swiss heritage site of national significance and today houses visitor facilities while overlooking Wörth Castle across the river.
- 8
Switzerland · Restored · prime 1732
Tarasp Castle
Tarasp Castle is a medieval hilltop castle in the Lower Engadin, Graubünden, Switzerland, perched on a rocky spur above the valley. The complex consists of a tall five‑storey bell/watch tower with a Baroque onion dome, a 13th‑century palas with thick walls, plastered curtain walls and residential wings, a chapel integrated into the ring wall, and a 16th‑century zwinger with half towers.