In the north western part of the Sanctuary of Apollo lies the ancient Theater of Delphi. This is one of the few theaters of antiquity with no accurate record regarding the date of creation or its forms and use over the centuries. Here in ancient times instrumental and vocal competitions took place under the Pithia games and other religious holidays.
The first stone theater was built in the 4th century BC and it was assumed that the spectators sat on wooden seats or the ground. After several changes and repairs there are today stone seats, a stage and orchestra pit were constructed between 160-189 BC through funding from Eumenis II of Pergamon.
The auditorium was divided into two zones separated by radial scales with a total capacity for 5,000 people. Note that the stage floor and parapet date back to the Roman period.
Lastly, the stage (of which only the foundations remain) was divided into two parts, the foreground and the main stage. The facade of the foreground was decorated with a frieze of the 1st century AD depicting the feats of Hercules.