What is the Sydney Harbour Bridge and why is it significant?

The Sydney Harbour Bridge is a steel through arch bridge that spans Sydney Harbour, connecting the central business district to the North Shore in Sydney, Australia. The bridge, which was designed by British firm Dorman Long and Co. Ltd, and opened in 1932, is one of the most recognizable landmarks of Australia. The bridge is 1,149 meters long, with a span of 503 meters, and stands 134 meters above the harbour.

At the time of its construction, the Sydney Harbour Bridge was the largest steel arch bridge in the world. The construction of the bridge was an engineering marvel, and it took over 1,400 workers eight years to complete. The bridge is not only significant for its engineering achievement, but it also has an important place in Australian history and culture.

The bridge is a symbol of national pride and unity, and it played a significant role in the economic and social development of Sydney. It is also an important tourist attraction and is used for many public events, including the annual New Year's Eve fireworks display. The bridge has also been the site of many historic events, including the return of Australian troops after World War II.