In the north-east of the city of Argos lies the site of Mycenae( 3000 B.C.). The monumental Lion Gate and the Treasury of Atreus , also known as the Tomb of Agamemnon, are considered to be the finest examples of Mycenaean architecture.35 km away is the magnificent open - air theatre of Epidaurus, designed by Polycleitos the Younger in the 3rd century B.C. It can seat 12300 spectators and the acoustics are exceptional. Every summer, performances of ancient drama take place in this theatre. Our agency organizes also tours for all the performances to Ancient theater of Epidaurus during the summer.