Located in the Chang'an Street, to the west of Tian’anmen Square, boasts three large halls — a 2,091-seat opera house, a 1,859-seat concert hall and a 957-seat theatre. Construction of the Theatre began in December 2001 and was completed in late September this year. Total investment was 3.1 billion yuan.
This place is just amazing. I recently attended a classic chinese opera and fell completely in love with the building's shapes, both inside and outside. A must if you visit Beijing.
Consider also of course going to the chinese opera ;) just 20€ for more than 2 hours of spectacle.