The Porta San Giorgio is a medieval gateway located on the south-east end of the Oltrarno walls of Florence, Italy.
The road away from Florence soon passes the church of San Leonardo in Arcetri.
In 1529, during the siege of Florence, the gateway was sealed by Michelangelo, to defend it against cannonades.
[1] The interior lunette of the archway has a 14th-century fresco by Bicci di Lorenzo, Madonna and Child Between Saints, with St George on the right in armor, his shield bearing a red cross on a white field, once the heraldic symbol of Florence.
[2] On the outer face is a marble plaque with a bas-relief, St George Slaying the Dragon, by Andrea da Pontedera.