The Epidaurus Theater is an ancient Greek theater located in the Argolid region of the eastern Peloponnese peninsula. It is known for its exceptional acoustics and was used for musical and theatrical performances in the ancient world.

The theater was built in the 4th century BC and has a seating capacity of around 14,000 people. It was designed to accommodate spectators from the nearby sanctuary of Asclepius, the god of healing. The theater was used for a variety of performances, including tragedies, comedies, and musical performances, and was a major cultural center of ancient Greece.