The building that stands on a spur of the hill with white plaster, a facade protected by a porch and three blind arches on the south wall, owes the current appearance to the restoration in 1863 designed by the architect Niccolò Matas. The tall bell tower spire was instead built in 1844 to replace a more modest belfry now badly damaged.
The original church dates from the thirteenth century and one of the first documents that mention the rector dates back to 1273.
It was originally patronage of the Pilastri, in the fourteenth century it was of the Monaci della Badia a Settimo (Monks of the Abbey at Seventh) and the Bardi family who kept it for centuries. The Bardi family rebuilt the church around 1337, as evidenced by a plaque inside. The Bardi were also responsible for the restoration in 1707 that transformed the interior of the building into a baroque style, with the marble, stucco and gilding that still characterize it.
In San Giorgio two important fourteenth-century paintings are preserved: il Crocifisso dolente (The Painful Crucifix), on the main altar, a mature work by Taddeo Gaddi and The Virgin Mary with Child, Angels and Saints, dated 1336.
Also noteworthy is a capital in sandstone (XI century) which, according to tradition, comes from the original church and depicts four human heads decorated with small rosettes.
Within the building is also a courtyard where traces of structures dating to the fourteenth century can be found.
