Next to the Theatre of Dionysus, at the foot of the Acropolis, is the Odeon of Herodes Atticus (commonly known as Herodeon). The Roman theater was built between 160 AD and 174 AD by the Roman senator, Herodes Atticus in memory of his late wife, Rigilla. The original design accommodated a circular orchestra, which is now a marble-paved semi-circle. The auditorium is made of 35 rows and seats 4680 people. Since its restoration in the 1950s, Herodeon has hosted legendary artists such as Nana Mouskouri, Luciano Pavarotti, and Frank Sinatra, to name a few. Every summer, from June to October, Herodeon is the prime venue for the Athens and Epidaurus Festival.