Aspendos Ancient City, which is 17 km away from Belek, has one of the rare theaters preserved well including the stage up until today. Built in the 1st century, Theater of Aspendos has a capacity of 17,000 people.
In the 13th century, the Seljuks used the structure as a caravanserai and fortified the northern part with a typical Seljukian arch. The mystery of the acoustics of the structure created by a young local boy called Xenon could not be solved still.
Today, the structure is used for concerts, carnivals, festivals and oil wrestling. Other worth-seeing structures in Aspendos include Agora, Basilica, Nymphaeum and 15 km-long aqueducts.