The sword in the stone of San Galgano
This would be enough to grant a visit, but even more interesting is the small chapel of Monte Siepi, standing on the next hill. Built in 1183, it is the reason behind the existence of the abbey itself. The whole chapel in fact was built around one of the most peculiar Christian relics worldwide – which couldn’t be moved from there.
We are talking about no less than the sword in the stone, which was placed there by Saint Galgano as a sign of his conversion from military into a life of worship. Since you are probably wondering: yes, there is a possibility that this is the actual sword from the Arthurian legends, since the event is concurrent with the time the legends were written and Galgano is the Italian for Galwain, one of the names of the Arthurian knights. It is equally possible that Galgano was inspired in his action by the British tales.