The beautiful Hanoi Opera House was built in 1911 by the then ruling French. It’s a phenomenal piece of neo-classical French architecture featuring Gothic themes on the doors and domes with pillars, shuttered windows, balconies and a glass room. Musicians, actors and dancers play to a 600-strong audience delivering powerful operatic and classical performances, making it a very popular theatrical attraction.
The Hanoi Opera House is the biggest theatre in Vietnam and speaks volumes as historical and cultural evidence of Vietnam under French rule. The interior is even more magnificent than the exterior with many arguing it is aesthetically even more appealing than the Paris Opera House. Visitors today will be entertained at this architectural landmark which features a range of events including local Vietnamese opera, traditional folk music, ballets and many international concerts.
http://www.vietnam-guide.com/hanoi/hanoi-opera-house.htm