Built at the beginning of the fourteenth century just outside the city walls to accommodate pilgrims who arrived at the city when the doors were already closed, the little hospital dedicated to St. Thomas is a two-floor building, with two independent entrances. The building contains many decorative and architectural features linked to Templar legends, including a moustached man depicted in low-relief who could represent the famous Bafometto, who was adored by the Knights Templar, but is more likely to be a monk who guards the Via Francigena. The Agnus Dei is carved on the architrave of the main portal, while on the east side, there is an engraving of a cosmological cross, a feature typical of the Benedictine Order.
