San Galgano Abbey in Chiusdino is a unique site combining history, legend, and a captivating atmosphere. The 13th-century Gothic church lacks a roof, with tall walls standing against the Tuscan sky, while a few hundred meters away lies the Montesiepi Rotunda with the sword embedded in the rock. The location is easily accessible by car with free parking and can be visited in a couple of hours, making it ideal for a trip through the Sienese countryside.
- Roofless Gothic church from the 13th century with spectacular light displays
- Original sword in the stone of San Galgano from 1180 in the Montesiepi Rotunda
- Panoramic views of the Sienese hills from the abbey, especially at sunset
- Atmosphere of peace and mystery at a site accessible with free parking
Events nearby

13th-century Cistercian abbey with Gothic naves open to the sky and San Galgano’s sword embedded in the rock at Montesiepi. Free parking and car access.
- Strada Vicinale Tempio di San Galgano, Siena (SI)
- Open in Google Maps
- View on Google Images Abbazia di San Galgano a Siena
Good to know
Introduction
Historical Notes
- 1185: Construction of the Rotonda di Montesiepi
- 1218: Beginning of the abbey’s construction
- 14th century: Beginning of decline and looting
- 1786: Suppression of the abbey
The Sword in the Stone: Between Legend and Reality
Photography and Light: How to Capture the Essence
Why Visit It
When to Go
In the Surroundings
Itineraries nearby
💡 Did You Know…?
Legend has it that Galgano Guidotti, a repentant knight, thrust his sword into the stone of Montesiepi to transform it into a cross, marking his conversion. That sword is still there, visible in the round chapel. An ultra-realistic and little-known detail? Look closely at the floor of the abbey’s apse: some bricks still bear the circular marks left by the machinery used to remove the lead from the roof, sold in the 1700s. This explains why the nave is now exposed to the elements, creating that so evocative atmosphere.






