The Athens Concert Hall is a concert hall located in Athens, on Vasilissis Sofias Avenue. The Hall was inaugurated in 1991 with two halls. Since then it has been augmented with two more halls and now has a total of four: two large and two smaller ones. The Hall has optimal facilities for opera performances, and some operas are presented every season. The Megaro Moussikis station of the Athens Metro is just outside the Hall, on Line 3.