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Graubünden

Top 20 Castles in Graubünden

Best castles in Graubünden are found in a canton in eastern Switzerland, a region historically significant for its numerous medieval castles. These structures, ranging from well-preserved complexes to ruins, offer insight into the region's past and strategic importance. Graubünden's diverse landscape, characterized by mountains, gorges, and rivers, provides scenic locations for these historical sites. The area's castles reflect centuries of regional power and architectural evolution.

Best castles in Graubünden

  • The most popular castles is Altfinstermünz Fortress and Bridge, a…

Last updated: April 23, 2026

Altfinstermünz Fortress and Bridge

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Above the Reschenpass, below raging waters, in between the old customs station - great for a break!

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The old border fortification from 1263 is in the Finstermünz Gorge. The sight of the bridge over the Inn and the fortress buildings on the steep river bank is fascinating …

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Mesocco Castle

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Castello di Mesocco
The ruins of the Castello di Mesocco are located at 752 m above sea level on a mighty rock south of the village of Mesocco in Misox …

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Crap da Sass Castle

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The great location on the lake makes this castle a bijoux. Unfortunately in private hands and therefore only to be admired from the outside.

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From here you have on the Via Spluga a great view of the ruins Hohen Rätien

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Confluence of the Vorderrhein and Hinterrhein, Reichenau
Dominated by Reichenau Castle, the hamlet lies at the confluence of the Vorderrhein and Hinterrhein rivers, making it virtually the birthplace of the …

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Ruins of Splügen Castle

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The ruins of the hilltop castle are located at an altitude of 1,518 meters, just under a kilometer east of the village, on a small hill below the former valley …

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Riom Castle

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Check the fortified church's opening hours in advance—it's not always open. Concerts and events take place regularly.

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Access to the long, three-story building is only possible via a steep, narrow path from the east, which was widened in the 1950s during a restoration and secured by railings. …

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Spaniola Tower

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Spaniola Castle Tower, Pontresina
The name Spaniola (in Roman spagniöl = Spanish) seems to be of more recent origin. The edge is directed towards the mountain to protect against avalanches …

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Paul
September 26, 2025, Castello di Mesocco

Mesocco Castle San Bernardino Castle Mesolcina Calanca The ruins of Mesocco Castle stand on top of an imposing rocky hill that rises steeply from the valley floor. This imposing fortress stands in the center of the valley, forcing the Moesa River into a wide bend in a narrow, impassable gorge, leaving only a narrow passage to the west. Mesocco Castle is protected on three sides by steep cliffs. Only to the northeast, on the upstream side of the valley, does the slope slope more gently. Climbing up the old access road to the castle from the north side, you first reach the Church of St. Maria del Castello and are already on the castle grounds, which were once surrounded by a defensive wall. The impressive ruins consist mainly of the remains of defensive works built in the last decades of the 15th century, i.e., during the final phase of the castle's life. Among them are numerous ruins from earlier eras, so that the castle's current appearance reveals its eventful history, which has its roots in the early Middle Ages. Graubünden Ferien, Alexanderstrasse 24, 7001 Chur https://www.graubuenden.ch/de/ausflugsziele/castello-di-mesocco

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Paul
September 26, 2025, Castello di Mesocco

Mesocco Castle San Bernardino Castle Mesolcina Calanca The ruins of Mesocco Castle stand on top of an imposing rocky hill that rises steeply from the valley floor. This imposing fortress stands in the center of the valley, forcing the Moesa River into a wide bend in a narrow, impassable gorge, leaving only a narrow passage to the west. Mesocco Castle is protected on three sides by steep cliffs. Only to the northeast, on the upstream side of the valley, does the slope slope more gently. Climbing up the old access road to the castle from the north side, you first reach the Church of St. Maria del Castello and are already on the castle grounds, which were once surrounded by a defensive wall. The impressive ruins consist mainly of the remains of defensive works built in the last decades of the 15th century, i.e., during the final phase of the castle's life. Among them are numerous ruins from earlier eras, so that the castle's current appearance reveals its eventful history, which has its roots in the early Middle Ages. Graubünden Ferien, Alexanderstrasse 24, 7001 Chur https://www.graubuenden.ch/de/ausflugsziele/castello-di-mesocco

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Ruinaulta Rhine Gorge The Ruinaulta, or Rhine Gorge, is a gorge of the Vorderrhein River, up to 400 meters deep and approximately 13 kilometers long, between Ilanz and the mouth of the Hinterrhein River near Reichenau in the canton of Graubünden in Switzerland. The Romansh name 'Ruinaulta' is composed of the two words ruina (scree slope, quarry) and aulta (high). The Ruinaulta was formed after the Flims Landslide almost 10,000 years ago. At that time, over 10 billion cubic meters of rock broke off between the Flimserstein and Piz Grisch, burying the Vorderrhein Valley between the present-day villages of Castrisch and Reichenau under a mass of debris several hundred meters thick. Because the Vorderrhein River could no longer drain away, a lake was dammed over a length of approximately 25 kilometers. Over time, the river cut deep into the landslide, and the resulting lake drained away completely. What remained was the Ruinaulta, with its steep limestone scree cliffs in impressive erosion formations. Text / Source: Wikipedia https://de.wikipedia.org/wiki/Ruinaulta

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Ruinaulta Rhine Gorge The Ruinaulta, or Rhine Gorge, is a gorge of the Vorderrhein River, up to 400 meters deep and approximately 13 kilometers long, between Ilanz and the mouth of the Hinterrhein River near Reichenau in the canton of Graubünden in Switzerland. The Romansh name 'Ruinaulta' is composed of the two words ruina (scree slope, quarry) and aulta (high). The Ruinaulta was formed after the Flims Landslide almost 10,000 years ago. At that time, over 10 billion cubic meters of rock broke off between the Flimserstein and Piz Grisch, burying the Vorderrhein Valley between the present-day villages of Castrisch and Reichenau under a mass of debris several hundred meters thick. Because the Vorderrhein River could no longer drain away, a lake was dammed over a length of approximately 25 kilometers. Over time, the river cut deep into the landslide, and the resulting lake drained away completely. What remained was the Ruinaulta, with its steep limestone scree cliffs in impressive erosion formations. Text / Source: Wikipedia https://de.wikipedia.org/wiki/Ruinaulta

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Confluence of the Vorderrhein and Hinterrhein, Reichenau Dominated by Reichenau Castle, the hamlet lies at the confluence of the Vorderrhein and Hinterrhein rivers, making it virtually the birthplace of the Rhine. It all began 10,000 years ago. Between the Flimserstein (a high plateau) and Piz Grisch, over 10,000 cubic meters of rock broke off and thundered down into the valley. Towards Reichenau, the Vorderrhein valley disappears under a gigantic mass of rubble. From there, the Rhine diligently ate its way through the rock, creating the spectacular Swiss "Grand Canyon" – the Ruinaulta. Text / Source: myswitzerland.com https://www.myswitzerland.com/de-ch/erlebnisse/route/vom-zusammenfluss-der-rheine-in-die-rheinschlucht/

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Confluence of the Vorderrhein and Hinterrhein, Reichenau Dominated by Reichenau Castle, the hamlet lies at the confluence of the Vorderrhein and Hinterrhein rivers, making it virtually the birthplace of the Rhine. It all began 10,000 years ago. Between the Flimserstein (a high plateau) and Piz Grisch, over 10,000 cubic meters of rock broke off and thundered down into the valley. Towards Reichenau, the Vorderrhein valley disappears under a gigantic mass of rubble. From there, the Rhine diligently ate its way through the rock, creating the spectacular Swiss "Grand Canyon" – the Ruinaulta. Text / Source: myswitzerland.com https://www.myswitzerland.com/de-ch/erlebnisse/route/vom-zusammenfluss-der-rheine-in-die-rheinschlucht/

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Paul
February 6, 2025, Spaniola Tower

Spaniola Castle Tower, Pontresina The name Spaniola (in Roman spagniöl = Spanish) seems to be of more recent origin. The edge is directed towards the mountain to protect against avalanches and rockfalls, but also for strategic reasons. The round-arched high entrance and the toilet extension on the second floor are clearly visible and unique. The tower can be viewed from the outside. The tower was built around 1200, but there are no written documents. Text / Source: Pontresina Tourism, Via Maistra 133, Pontresina https://www.pontresina.ch/de/guide/unser-pontresina/ausflugsziele-im-ueberblick/kultur-architektur/spaniolaturm

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Paul
February 4, 2025, Spaniola Tower

Spaniola Castle Tower, Pontresina The name Spaniola (in Roman spagniöl = Spanish) seems to be of more recent origin. The edge is directed towards the mountain to protect against avalanches and rockfalls, but also for strategic reasons. The round-arched high entrance and the toilet extension on the second floor are clearly visible and unique. The tower can be viewed from the outside. The tower was built around 1200, but there are no written documents. Text / Source: Pontresina Tourism, Via Maistra 133, Pontresina https://www.pontresina.ch/de/guide/unser-pontresina/ausflugsziele-im-ueberblick/kultur-architektur/spaniolaturm

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Frequently Asked Questions

Are there family-friendly castles to visit in Graubünden?

Yes, several castles in Graubünden are suitable for families. For instance, Mesocco Castle and Crap da Sass Castle are both listed as family-friendly. Many offer open spaces for children to explore and historical insights for all ages.

What kind of natural features can I expect to see near Graubünden's castles?

Graubünden's castles are often set amidst stunning natural landscapes. For example, Reichenau Castle is located at the picturesque confluence of the Vorderrhein and Hinterrhein rivers, offering views of the 'birthplace of the Rhine'. Other castles are found near lakes, gorges, and mountains, providing scenic backdrops and opportunities for exploration.

What is the best time of year to visit castles in Graubünden?

The best time to visit Graubünden's castles is generally from spring to autumn (May to October) when the weather is mild and most sites are fully accessible. During these months, you can enjoy the surrounding nature and outdoor activities. Some sites, like Altfinstermünz Customs Station, are open specifically from May to October.

Are there any castles in Graubünden that offer unique cultural experiences?

Yes, Riom Castle (Rätia Ampla Castle) has been transformed into a cultural amenity, hosting the Origen Festival Cultural, which blends history with contemporary arts. Schauenstein Castle is also notable for its culinary excellence, reimagined as a gourmet destination by chef Andreas Caminada.

Can I find hiking trails near the castles in Graubünden?

Absolutely. Graubünden is a prime hiking region. Many castles are integrated into or located near hiking routes. You can find numerous options in the Hiking in Graubünden guide, which includes trails like the Morteratsch glacier trail and routes near the source of the Rhine, often passing by historical sites.

Which castles offer impressive viewpoints or panoramic vistas?

Many castles in Graubünden are strategically located for commanding views. Hohen Rätien Castle Ruins, perched high above the Viamala Gorge, offers stunning views. Mesocco Castle and Ruins of Splügen Castle also provide fantastic views of the surrounding towns and mountains.

Are there any castles with unique architectural styles or historical significance?

Graubünden boasts castles with diverse architectural styles. Marschlins Castle, for example, features a distinctive Savoyard style with a square layout and corner towers, unique in the region. Marschlins Castle is also a Swiss heritage site of national significance. Marmels Castle is a grotto castle, uniquely built under an overhanging rocky outcrop.

What are some of the most historically significant castle ruins in Graubünden?

The ruins of Mesocco Castle constitute one of the largest castle complexes in Switzerland, serving as an aristocratic center for centuries. Hohenrätien Castle, with over 4000 years of continuous settlement, is an extraordinary cultural asset due to its immense historical depth and strategic location controlling the Viamala Gorge.

Are there any castles in Graubünden known for local legends or folklore?

Belfort Castle ruins are steeped in numerous legends and historical tales, particularly concerning its inhabitants and its destruction in 1499. These stories add an evocative layer for visitors interested in medieval storytelling and local folklore.

What outdoor activities can I do near the castles in Graubünden besides hiking?

Beyond hiking, Graubünden offers a variety of outdoor activities. You can find running trails, such as the Pontresina - Val Roseg Trail, and challenging mountain hikes, including via ferratas like the Pinut Via Ferrata, all within the region where these historical sites are located.

How accessible are Graubünden's castles by public transport?

Many castles in Graubünden are accessible by public transport, though some may require a short walk from the nearest station or bus stop. For example, the Ruins of Splügen Castle are easily reachable from the village on foot in about ten minutes, though car access is not possible directly to the ruins.

Are there any castles that were important for trade or border control?

Yes, several castles played crucial roles in trade and border control due to Graubünden's strategic location. Altfinstermünz Fortress and Bridge, for instance, served as an old customs station above the Reschenpass. Altfinstermünz Customs Station and Covered Bridge was an old border fortification from 1263 in the Finstermünz Gorge.

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