La Fonte Gaia is a fountain of Siena in Italy.
La Fonte Gaia is located in Piazza del Campo and owes its name to the joy manifested by the Sienese people the day of his inauguration.
Conducted between 1409 and 1419 by the sculptor Jacopo della Quercia is the highest fountain in the city of Siena and is probably the most important. La Fonte Gaia has immense artistic value.