Today, Mike and I enjoyed a wonderful tour of the Sydney Opera House and it was spectacular!

It is a multi-purpose performing arts facility with a seating capacity of over 2600+.
Notice how the wood around the stage and floor seating is a different colour from the walls and ceiling? The dark wood is an acoustic aid ensuring that the music is reflected off the walls. Also see how directly behind the stage the wood has a swirl effect to it? This too is deliberate to enhance the acoustics.
Opera and dance performances, including ballet, take place in the Joan Sutherland Theatre, so named in 2012 as a tribute to the celebrated Australian operatic soprano. The theatre seats around 1500 people.
There are also three theaters of different sizes and configurations for stage plays, film screenings and smaller musical performances.

approximately four acres sitting over the structure. They were made in Sweden.
