Ancient Roman and Etruscan settlement, Poggibonsi is set in the hills of Siena. The importance of this town grew rapidly between the X and the XII century, thanks to its position across the Via Francigena: declared "imperial city" by Emperor Frederick II, according to Giovanni Villani, chronicler of the XIV century, it was one of the most beautiful city in Italy. However, the expansion of Poggibonsi lasted only one century: Florence conquered and destroyed it in 1270, thanks to the help of the Neapolitan and French troops. Since that moment, the city followed Florence's fortune.
The Convent of St. Lucchese, built - according to the tradition - after a visit of St. Francis in this area, preceded by a portico, have a façade of a hut, single aisle lighted by large Gothic windows.