Fact File

6,223 sq metres of glass were used.

The buildings footprint is 1.75 hectares.

The entire site covers an area of 5.798 hectares.

The final cost of the Sydney Opera House was $102 m.

In October  2003, Sydney Opera House celebrated its 30th birthday.

It took ten years to complete the grand organ.

The building is 115 metres wide.

The building is 187 metres in length.

The original estimate to build the Opera House was $7 m.

It was originally estimated to take 4 years to build.

There are 2,679 seats in the largest venue  the concert hall.

Queen Elizabeth the 2 has visited the Opera House 5 times.