The Church of San Giorgio is located in Petroio, a small village in the Municipality of Trequanda, and is the first place of worship visitors see when entering the town. Dating to the 1300s, it’s also the oldest church in the village. The building sits atop a cliff, offering a splendid view of Pienza and the castle in Radicofani.
The church has a Romanesque façade and a beautiful bell gable from the 1700s. The interior, a rectangular room topped with a vault, conserves an 18th-century painting from the Sienese school depicting the Pietà with Saints Bartholomew and Magdalene and an image of a saint on an oval canvas, which many believe depicts St. Joseph; both paintings are located above the high altar.
Under the altar is an urn containing the relics of a certain St. Emilian: perhaps the Bishop of Nantes, who lived in the 16th century.
This church also used to be home to a priceless tempera panel painting by the Master of Badia a Isola, which today is on display in the Pinacoteca in Siena.