Metallurgical tests conducted on the sword in 2001 confirmed the iron composition is consistent with 12th-century craftsmanship.
The chapel's circular design is modeled after the Holy Sepulchre in Jerusalem, reflecting the crusader-era influence of the time.
Ambrogio Lorenzetti's frescoes were discovered under later layers of plaster during 20th-century restorations.
The sword is embedded so firmly that it has been interpreted by local tradition as impossible to remove, potentially inspiring the Arthurian legend.
The floor of the rotunda contains the burial site of Galgano Guidotti, the knight who renounced his title to become a hermit.
The Cappella di San Galgano a Montesiepi is a rotunda chapel constructed in 1185, centered on the hermitage where San Galgano spent his final year. Its defining feature is the 'Sword in the Stone,' an iron blade embedded in a rock located in the center of the structure, protected by a plexiglass enclosure. The chapel features a distinctive circular plan with concentric bands of alternating white limestone and red brick. Original 14th-century frescoes by Ambrogio Lorenzetti depicting the life of Saint Galgano adorn the interior walls. The structure stands on the hill of Montesiepi, overlooking the nearby ruins of the Cistercian Abbey of San Galgano. Metallurgical analysis has suggested the sword dates back to the 12th century, consistent with the saint's life. The building serves as a site of pilgrimage and historical study, maintaining its structural integrity through centuries of exposure. It is distinguished from the larger roofless Abbey ruins located at the base of the hill.
The interior center-point facing the sword, capturing the contrast between the frescoes and the stone floor.
Combine your visit with the nearby roofless San Galgano Abbey ruins to understand the full historical complex.
The path from the parking area to the chapel is a steep, unpaved incline; wear sturdy walking shoes.
Check local weather forecasts as the hilltop is exposed to high winds and rain during autumn and winter.
Do not attempt to touch the plexiglass housing the sword, as sensors and security monitoring are in place.
Maintain a quiet, respectful demeanor as this is a consecrated site; shoulders and knees should be covered.
