Classical period in the second half of the C 5th BC a large, square Telesterion was built, six entrances and its roof supported by forty-two columns. The original Anaktoron was preserved inside, with the throne of the hierophant positioned in front of its entrance. Initiates could watch the proceedings seated on the steps around all four sides cut into the rock or built with blocks of stone. In the C 4th BC a stoa was built to the East. Roman period in the C1st AD emperors Hadrian, Antonius Pius, Marcus Aurelius, built the triumphal arches, the greater and lesser Propylaia, the great Fountain; but at the end of the C 2nd Barbarians brought much destruction which was later repaired. However in 379 A.D. Theodosius, in Christian, forbade all ancient cults and the mysteries of Demeter began to wane.