The Sydney Opera House is a great architectural work of the 20th century that brings together multiple strands of creativity and innovation in both architectural form and structural design. It is a masterpiece of late modern architecture by Danish architect Jørn Utzon that pushed architecture and engineering to new limits. The highest roof point is 67 metres above sea-level, the same as a 22-storey high building. The Sydney Opera House, inaugurated in 1973, is located at Bennelong Point on Sydney Harbour and is the most distinctive landmark in Sydney. The building comprises multiple performance venues which together host well over 1500 performances annually. Performances are presented by three resident companies: Opera Australia, the Sydney Theatre Company and the Sydney Symphony Orchestra.