held about 6000 spectators. The Bouleuterion or prytaneion is well-preserved and has been further restored. It was the capital's assembly hall of the Lycian League and overlooked the theatre the Agora in the East. It was constructed in the early 1st century BC and held about 1400 people. In the centre of the cavea is a tribunalia, seats reserved for governors. The first alterations, when the cavea was enlarged and the semicircular wall in the west was connected to the northern and southern walls, are linked to the annexation of Lycia as a Roman province, most probably under Claudius (r. 43-51 AD) or Nero (r. 51–69). After a major earthquake in 142/143 AD a stoa was added outside and a stage building inside, as it was also to be used as a concert hall (Odeion). In the 5th c. AD it was incorporated into the new fortification wall as a bastion. The main street connected the inner harbour to the Agora and is one of the widest and best-preserved streets in Lycia. Both sides of the street are lined with Ionic-order colonnades, with granite columns on the east and marble columns on the west. The well-preserved Arch of Medustus is the north gate of the city and a magnificent triple vaulted triumphal arch built by the citizens of Patara in about 100 AD in honour of Mettias Medustus, the Governor of Lycia. Several baths are known; the harbour (or datepalm) baths, the Vespasian (or Nero) baths, central baths, small baths and Byzantine baths. The lighthouse stood at the entrance to the major naval and trading port of Lycia, which had an outer and an inner harbour. It was built in 60 AD during the reign of Nero, according to an inscription, and is one of the oldest surviving. It has a unique structure rising 26 m on a magnificent 3-tiered square base. Hadrian's Granary, so-named as it was built during his visit in 131 AD, lies on the side of the ancient harbour for storage of cereals and other goods to be shipped to Rome. It is 75m x 25m and was divided into 8 sections. The aqueduct was built under Claudius and renovated under Vespasian after an earthquake. Its length was 22.5 km and comprised five bridges as well as a rare inverted siphon or pressurised pipeline which is still largely intact. The siphon avoided the construction of tall