Elaborately built villa with a peristyle court, many rooms, gardens and a luxurious bath, the so-called "Octagon". The mosaics and the arched roofs of the bath are still well preserved. In the 1st cent. A.D. the building had replaced the Sanctuary of Hestia as well as other buildings of Classical times. . (5th - 4th cent. B.C.). During the 3rd cent A.D. the SE Building underwent alterations. The edifice was recognized as temporary residence for the emperor Nero, who had lived at the Sanctuary during his participation to the Olympic Games of 65 A.D.