"The focal point of Ephesus is the theater, which seated 24,000 and was the largest in Asia Minor. It dates from early in the Hellenistic period, with extensive additions and reconstructions in the Roman era. The horseshoe-shaped auditorium extends through an angle for 220 degrees, with a diameter of 150 m (492 ft), its uppermost tier 30 m (98 ft) above the orchestra, its middle sector still surmounted by an arcade."
--J. Freely. (1990) Classical Turkey. Viking, Britain.