The Teatro Colón is the main Opera House in Buenos Aires, Argentina. It is ranked the third best opera house in the world by National Geographic and is acoustically considered to be amongst the five best concert venues in the world.
The theatre is central located and bounded by Cerrito st., Libertad Street (the main entrance), Arturo Toscanini Street, and Tucumán Street.

Teatro_Colón,_Buenos_Aires

The present Colón replaced an original theatre which opened in 1857. Towards the end of the century it became clear that a new theatre was needed and, after a 20-year process, the present theatre opened on 25 May 1908, with Giuseppe Verdi’s Aida. Since then the Teatro Colón was visited by the foremost singers and opera companies of the time.
The auditorium is horseshoe-shaped, has 2,487 seats (slightly more than the Royal Opera House in Covent Garden, London), standing room for 1,000 and a stage which is 20 m wide, 15 m high and 20 m deep.
The stage has an inclination of 3 cm per meter, 35.25 m wide, 34.50 m deep and 48 m high. It includes a spinning disk with a diameter of 20.30 m which can be electrically activated to spin in any direction and change the scenes quickly.
The orchestra pit can hold up to 120 musicians. It has been treated with a resonance chamber and special curves for the reflection of sound. These conditions, together with the architectural proportions of the hall and the quality of the materials used, give this Opera house its exceptional acoustics.
We have visited Teatro Colón with our students many times. Taking a guided tour of the theater is a dazzling experience that will make you vibrate while getting to know a history of over a hundred years; a history that ennobles both the Argentine and the global culture. You can take a guided tour every day from Mondays to Sunday and they are very affordable. Although not so affordable, we highly recommend to attend a ballet performance, opera or concert. It is really worthy.

More info at: http://www.teatrocolon.org.ar/en/