Porta Fontebranda is one of the oldest gates of Siena and was built between 1230 and 1257 .
This door is part of the fourth circle of walls and is made with a double arch that opens into the deep wall curtain.
It is located between the Convent of San Domenico and Porta Laterina and in the past it was equipped with an antiport and a tower.
Porta Fontebranda was defended by the Compagnia Militare di Sant’Antonio , one of the most important and decisive military corporations of the city of Siena both in defense and in attack.
The Fontebranda area was in the past used for the processing of wool.