theatre on the site was built in the earliest days of the Attalid Kingdom.
#Turkey
The theatre, which is the steepest theatre in Western Anatolia, has a 10 thousand-seat capacity. The theatre at Pergamum has seventy-eight rows of seats and is divided into three horizontal seating sections. The portable wooden stage building is unique – set up only on performance days and removed once the performance ended.

It has so many characteristics: 80 rows of very tall steps, with the highest situated about 36 meters above the orchestra pit; it could seat 10,000 spectators. Another interesting element is the presence of a terrace 246 meters long, a singular porticus post scaenam, with a covered Doric portico leading to the Temple of Dionysus, installed in its northernmost extremity.

https://voyageturkey.net/pergamon/#close