This fourteenth-century building, located at the top of Corso della Libertà, is the birthplace of Bernardino degli Albizzeschi, also known as San Bernardino from Siena. He started to preach as a Franciscan monk in Massa Marittima.
The building has been renovated several times and it became the order’s headquarter in the sixteenth century. Its look resembles a nineteenth-century building and the only proof of the Saint’s passage is a plate representing his emblem.