Opened in 1973, the Sydney Opera House was designed by Danish architect Jørn Utzon. Its construction was partly financed by the Opera House Lottery. Utzon left under acrimonious circumstances before the building was finished; later work was completed by other architects. Located on Bennelong Point on Sydney Harbour, the building is a World Heritage Site. The tallest point in the city is the Sydney Tower built in the late 1970s-early 1980s, when height restrictions were far more lenient. The observation tower provides views of the entire city.