The ancient theatre of Epidauros, one of the most well-known and better preserved ancient theatres, is located at the eastern Peloponnese in southern Greece. The theatre, one of the seven wonders of Greece, was constructed late in the 4th and early in the 3rd century BC, with a second construction phase during the mid of the 2nd century BC. Special features of the theatre is the double slope of the koilon (in the vertical plane) as well as the side sections of the koilon (in the horizontal plane), which extend more than the typical semi-circular shape, hence enclosing the orchestra.
Already in the ancient times it was considered to be the most harmonious and beautiful open-air theatre with its famous acoustic qualities, today it attracts millions of tourists that every year queue to assist to the Epidauros Festival. The theater has a capacity of 13000 – 14000 people and was initially used for solo singing, chanting, musical contests (mainly for solo instruments) and theatrical performances of ancient drama. Similar types of activities are still entertained in the site during the summer months. However during the ancient times the theatre was used for therapeutic rituals, during which the pains and sorrows were taken back from Asklepios the medicine divinity.