Piazza del Campo is the main public space of the historic center of Siena, a city in Tuscany, Italy, and the campo regarded as one of Europe's greatest medieval squares. It is renowned worldwide for its beauty and architectural integrity. The Palazzo Pubblico and its Torre del Mangia, as well as various palazzi signorili surround the shell-shaped piazza. At the northwest edge is the Fonte Gaia.
The twice-a-year horse-race, Palio di Siena, is held around the edges of the piazza. The piazza is also the finish location of the annual road cycling race Strade Bianche.