The Concert Hall, with 2,679 seats, is the home of the Sydney Symphony and used by a large number of other concert presenters. It contains the Sydney Opera House Grand Organ, the largest mechanical tracker action organ in the world, with over 10,000 pipes.[citation needed]
The Opera Theatre, a proscenium theatre with 1,507 seats, is the Sydney home of Opera Australia and The Australian Ballet.
The Drama Theatre, a proscenium theatre with 544 seats, is used by the Sydney Theatre Company and other dance and theatrical presenters.
The Playhouse, an end-stage theatre with 398 seats.
The Studio, a flexible space with a maximum capacity of 400 people, depending on configuration.
The Utzon Room, a small multi-purpose venue, seating up to 210.
The Forecourt, a flexible open-air venue with a wide range of configuration options, including the possibility of utilising the Monumental Steps as audience seating, used for a range of community events and major outdoor performances. The Forecourt will be closed to visitors and performances 2011-2014 to construct a new entrance tunnel to a rebuilt loading dock for the Opera Theatre.
Other areas (for example the northern and western foyers) are also used for performances on an occasional basis. Venues at the Sydney Opera House are also used for conferences, ceremonies, and social functions.
Interior of Concert Hall