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Sasso Corbaro Castle - Bellinzona
Well Preserved Medieval Keep Castle in Switzerland

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Sasso Corbaro Castle is one of the the three castles in Bellinzona, Switzerland.

Unlike the other two castles Sasso Corbaro is not integrated into the city walls. The first part of the castle was the north-eastern tower which was built in 1478 to close a gap in the defenses of the city. In 1479 a small garrison was moved to the tower.

The north-eastern keep currently has four stories, though no records exist of its original height and roof. It was used as a living area when the castle was occupied.





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Small scale map showing the location of
Sasso Corbaro Castle - Bellinzona

Google map showing the location of
Sasso Corbaro Castle - Bellinzona

Large scale map showing
Sasso Corbaro Castle - Bellinzona


Sasso Corbaro, known as Unterwalden Castle after 1506 and Saint Barbara's Castle after 1818, is about 600 m (2,000 ft) south-east of town on a rocky hill. Unlike the other two castles Sasso Corbaro is not integrated into the city walls. The first part of the castle was the north-eastern tower which was built in 1478 to close a gap in the defenses of the city. In 1479 a small garrison was moved to the tower.

During peacetime the tower was used as a prison, though at least one prisoner escaped in 1494. The walls and south-west tower were added later.

The castle was struck by lightning multiple times during the 16th and 17th Centuries, and by 1900 was falling into ruins.

The fortress is a 25 by 25 m (82 by 82 ft) square with square towers on the north-east and south-west corners. The east wall is 1.8 m (5 ft 11) thick and other walls are about 1 m (3 ft) thick. All the walls have machicolations and swallowtail merlons for defense. The entrance to the courtyard is through the western wall, and contains evidence of a portcullis. The two story buildings on the south and west walls were both living quarters with a gabled roof. The castle chapel is located on the eastern side of the courtyard.

The north-eastern keep currently has four stories, though no records exist of its original height and roof. It was used as a living area when the castle was occupied.

Today, Sasso Corbaro Castle houses the Sala Emma Poglia which is the "wooden room" built for the Emma family during the 17th Century. Originally located in the entrance hall of their home in Olivone in the Blenio Valley, the room was purchased by the Canton of Ticino in 1944 and housed first in the Castelgrande before being moved to the Sasso Corbaro in 1989. The room is panelled entirely in walnut and also includes the stüva, stove which provided heating. The stove bears the crest of the Emma family (an eagle and a lion rampant).

The museum also houses temporary exhibits. It is open from March until November.






Bellinzona is the capital city of the canton Ticino in Switzerland. The city is famous for its three castles (Castelgrande, Montebello, Sasso Corbaro) that have been UNESCO World Heritage Sites since 2000.

The city lies east of the Ticino River, at the foot of the Alps. It stretches along the river valley, surrounded by the Saint-Gotthard Massif.

French Bellinzone, local German: Bellenz

Bellinzona has always occupied an important geographic location in the Alps. Several key alpine passes meet in the area around Bellinzona, making it a key trading center.

In the late 1st Century BC a fort was built in the area during the reign of the Roman Emperor Augustus. The fort fell into disrepair in the following centuries. It was rebuilt and expanded in the 4th Century AD. During the reign of Diocletian and Constantin Bellinzona's location was recognized as a key point in the defences and a large castle was built to protect the walls. This chain of castles and watchtowers protected northern Italy from invasion.

The town that grew up around the fortifications was known as Bilitio.

Following the collapse of the Western Roman Empire the successor states, which included the Ostrogoths around 500 AD, the eastern Byzantine Empire towards the middle of the 6th Century, and the Longobards from 568, all took control of Bellinzona and used the castle to assert control of the surrounding passes.

Under the Longobards, Bellinzona became the site of a permanent garrison to protect the region from raids by the neighbouring Frankish and Alemannic tribes. The Longobards controlled the traffic on the important trade routes from Bellinzona.

At around 774 the Frankish Kingdom (later to become the Carolingian Empire) gained control of Bellinzona and the Ticino valley.

Two centuries later the Holy Roman Emperor Otto III, seeking to restore the glory of ancient Rome, opened the Lukmanier and St. Bernard passes. Control of Bellinzona was a key part of this expansion. The city was taken from Milan and given as a gift to the Bishop of Como, who supported Otto's dynasty.

In 1002, following the death of Otto III, Marquis Arduino of Ivrea declared himself King of Italy and ratified the bishop's ownership of the Castelgrande and the city. Two years later, after Arduino had been defeated by Henry II the King of Germany, Henry II's man Enrico II reratified the gift of the Castlegrande to the Bishop of Como.

During the Investiture Controversy of the late 11th Century the city of Bellinzona with its castle came under the control of the Hohenstaufens of Swabia. In 1180, Frederick I (Barbarossa) placed the city under the jurisdiction of the city of Como.

In the following years Como supported the Pope in his conflicts with the Holy Roman Emperor. However in 1239, Como sided with the Emperor Frederick II who quickly moved forces into Bellinzona and strengthened the Castelgrande. In 1242 Milan sent Guelph (pro-papacy) forces to take Bellinzona. The city and castle were taken, weakening the Emperor south of the Alps.

The town was back under the jurisdiction of Como in 1249 and conflicts in northern Italy continued. Castelgrande was besieged in 1284, 1292 and 1303.

Around the end of the 13th Century the Rusca family built another castle, Montebello, in Bellinzona, which they then controlled. By 1335 the Rusca family had been driven out of Como and had to retreat to Bellinzona. Five years later, in 1340, Milan besieged Bellinzona. Following a lengthy siege, the city fell to Milan but the Ruscas were allowed to keep Montebello.

Pro-papacy Milan would dominate Bellinzona for the next century and a half, though the pro-Imperial Rusca would also occupy part of the city.

Under the control of the Visconti, trade flourished and the city of Bellinzona grew. During the second half of the 14th Century a long wall, known as the Murata, was built across the entire Tessin valley. This wall allowed Milan to protect and tax the trade route over the St. Gotthard Pass.

The city was controlled by Milan through the Visconti family after 1340, although the Visconti did not have a formal title and feudal rights until 1396 when they were granted by King Wenceslaus.

The orderly growth of Bellinzona was threatened in 1402 when Duke Gian Galeazzo Visconti died. The following year Bellinzona was taken under the control of Alberto di Sacco of Val Mesolcina. During the period of unrest following Gian Galeazzo Visconti's death, a tower which would become the nucleus of the third castle, Sasso Corbaro, was built outside the city.

Alberto held Bellinzonauntil 1419 when it was taken over by Uri and Obwalden, states that had expanded into the Leventina Valley. Milan attacked the city three years later in 1422 after an offer to buy the city was rejected by the Swiss Confederation. Troops from Uri and Obwalden were driven from the city and later defeated at the Battle of Arbed. This defeat discouraged the expansionist intentions of Uri and its allies towards Lake Maggiore for the time being.

The border between Uri and Milan was fixed in the peace treaty of 1426, but in 1439 Uri invaded again. While they were unable to take Bellinzona. Victories of the Swiss troops led to Milan granting all of the Leventina Valley to Pollegio to Uri in 1441.

Following the death of Duke Filippo Maria Visconti in 1447, Bellinzona was in the middle of the succession crisis between Franchino Rusca of Locarno and Heinrich of Val Mesolcina, who were allied with Uri and the Ambrosian Republic in Milan. The war following the succession crisis lasted nearly three years until Francesco I Sforza seized power in Milan. Bellinzona quickly accepted the new Sforza dynasty and the peace and stability that followed.

Peace was broken again in 1478 when the Swiss once again attacked Bellinzona unsuccessfully. Swiss pride was restored by the Battle of Giornico which followed, when a force of 600 Swiss soldiers defeated 10,000 Milanese troops. Following the attack, Milan built the Sasso Corbaro either on the site of a tower which had been built nearly a century before. The other two castles were strengthened and the Murata wall across the valley was rebuilt. Much of the modern castles and fortifications date from this period of construction in the late 15th Century.

In 1499 nearly one and a half centuries of Milanese rule ended with the invasion of Milan by Louis XII of France. He captured Bellinzona and fearing an attack by the Swiss, fortified the Castelgrande with 1000 troops. Throughout the winter of 1499/1500 unrest in Bellinzona grew. In January an armed revolt of the citizens of Bellinzona drove the French troops from the city. Seeking protection from France, Bellinzona joined the Swiss Confederation on April 14, 1500. Bellinzona would remain under the joint administration of Uri, Schwyz and Nidwalden until the creation of the Helvetic Republic after the Napoleonic invasion of Switzerland in 1798. From 1798 to 1803, under the Helvetic Republic, Bellinzona was the capital of the canton of Bellinzona.

Following the Act of Mediation in 1803 Bellinzona became part of the independent canton of Ticino, and the capital of the new canton from 1803 to 1814. From that date until 1878, Bellinzona, Lugano, and Locarno, took turns being capital every six years.

The city includes the village of Artore and, since the incorporation in 1907, the former municipalities of Carasso , Daro, and Ravecchia.

The city is known for its carnival Rabadan, which has taken place for over 150 years.

The Three Castles, officially listed as the Three Castles, Defensive Wall and Ramparts of the Market-Town of Bellinzone, have been an UNESCO World Heritage Site since 2000. The group is composed of Castelgrande, castle Montebello, castle Sasso Corbaro and fortified walls.

Castelgrande is located on a rocky peak overlooking the valley, with a series of fortified walls that protect the old city and connect to the Montebello. The third castle (Sasso Corbaro) is located on a isolated rocky promontory south-east of the other two.

Print of Belinzona


Walls at Belinzona


Arms of Belinzona


Battle re-enactment at Belinzona


Belinzona at Night


June, 30 1422: The Battle of Arbedo (canton of Ticino, Switzerland), fought between the Duchy of Milan and the Old Swiss Confederacy, occurs. A Milanese Army of 11,000 foot, 5,000 horse, under Francesco Bussone, defeated a Swiss army of some 2,500 foot. The defeat at Arbedo persuaded the Swiss to increase the number of pikemen.


Castelgrande at Belinzona



Unesco World Heritage Site

Unesco name of World Heritage site: Three Castles - Defensive Wall and Ramparts of the Market-Town of Bellinzona (added in 2000)

Justification for Inscription: Criterion iv The fortified ensemble of Bellinzona is an outstanding example of a late medieval defensive structure guarding a key strategic Alpine pass.

Click here for more UNESCO World Heritage Castles


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