Piazza del Campo is the principal public space of the historic center of Siena, Tuscany, Italy and is 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 of the annual road cycling race Strade Bianche.
The palazzi signorili that line the square, housing the families of the Sansedoni, the Piccolomini and the Saracini etc., have unified rooflines, in contrast to earlier tower houses — emblems of communal strife — such as may still be seen not far from Siena at San Gimignano. In the statutes of Siena, civic and architectural decorumwas ordered :”…it responds to the beauty of the city of Siena and to the satisfaction of almost all people of the same city that any edifices that are to be made anew anywhere along the public thoroughfares…proceed in line with the existent buildings and one building not stand out beyond another, but they shall be disposed and arranged equally so as to be of the greatest beauty for the city.”
The unity of these Late Gothic houses is effected in part by the uniformity of the bricks of which their walls are built: brick-making was a monopoly of the commune, which saw to it that standards were maintained.
At the foot of the Palazzo Pubblico’s wall is the late Gothic Chapel of the Virgin built as an ex voto by the Sienese, after the terrible Black Death of 1348 had ended.