An important section is the one gathering some remains of the Roman age. They are materials that have been dug out of a big cistern and of the big thermal structure that is still under excavation in the Mezzomiglio area. The annual excavation campaigns the Arizona University has been undertaking here are bringing to light an extraordinary structure, made of a big basin that should be surrounded by a portico, whose floor was realised with tiles bearing the consular seal of the 114 A. C. According to the tradition, this is the place where the poet Horace should come to benefit by the therapeutic qualities of Chianciano waters, under suggestion of the doctor Antonio Musa, who was particularly famous cause he had cured the emperor August.