Pergamum is one of the finest archaeological sites in Turkey. The city was a great center of culture and the capital of East Roman Empire. On the Acropolis there are numerous remains including the celebrated Library, the steepest theatre of Anatolia, the Temples of Trojan and Dionysos, the place of the monumental Altar of Zeus famous with the relief of God and devils, the Sanctuary of Demeter, the Gymnasium situated on terraces and the lower Agora.