In A.D. 357, the amphitheatre is described by Ammianus Marcellinus as perfect, and as a marvellous work, from its great height, and its immense size. He also mentions the massive walls of rough stone, or concrete (_moles_), bound together by travertine (_lapis tiburtinus_)[134]. A.D. 445. The amphitheatre was much repaired by the Prefect Rufus Cecina Felix Lampadius, under Theodosius II. He restored the seats, the arena, and the _podium_, as appears from an inscription[135] dug up on the spot in 1814, and fixed on the wall within the building to preserve it. These repairs are supposed to have been required in consequence of the damage done during the siege by the Goths under Alaric, or more probably from the effect of the earthquake mentioned by Paulus Diaconus[136] as taking place in that year, when he says that many of the great buildings in Rome were damaged. A.D. 508. The Prefect Venantius Basilius also repaired the arena and the _podium_, which had been damaged by an earthquake[137]. It was again used for the show of wild beasts under Theodoric in A.D. 519[138], and under Anicius Maximus, A.D. 523. These were the last occasions on which we have any mention of these savage exhibitions. In the beginning of the eighth century it appears to have been still perfect, from the well-known proverb preserved in Bede’s _Excerptiones patrum, Collectanea_, &c.; that the Colosseum and Rome would stand or fall together[139]; but during that century it was again seriously damaged by an earthquake, and it was then so much in ruins that it was not used until the eleventh, when it was converted into a fortress, and the southern side is said to have been much damaged by Robert Guiscard and his Normans, but more probably by the travertine stone being carried away for building materials. In 1130, it became the chief fortress of the Frangipani family, and Pope Innocent II. took refuge here from the anti-pope Anacletus[140]. In 1142, the Roman people had driven out the barons, and had possession of this with their other fortresses, as appears from the records of the Roman Senate at that period[141]. But the Frangipani[142] soon recovered it, and the pope of their party, Innocent III., A.D. 1180 (called by the opposite party the anti-pope), was their guest; and from hence he fulminated his excommunication against the emperors, but he was soon afterwards captured and banished. In 1160, Alexander III.[143] (Bandinelli of Siena, called the orthodox Pope) in his second year, being besieged by the Emperor Frederic Barbarossa, abandoned the Lateran Palace, and took refuge in the stronghold of the Frangipani, with his brothers and their families. He there held courts, treated causes, and also waited for opportunities. At that time the Colosseum gave its name to the district around it. The fortifications included part of the Palatine Hill, with the Arch of Titus, on which was a large tower.