140 William Street, Melbourne

140 William Street, formerly known as BHP House, is a striking 41-storey skyscraper in Melbourne's central business district, standing at 152.5 metres tall. Completed in 1972, it was Melbourne's first skyscraper and the second tallest building in Australia at the time. Designed by Yuncken Freeman with input from renowned structural engineer Fazlur Rahman Khan, the building showcases innovative architectural techniques and was the first office building in Australia to implement a 'total energy concept' for electricity generation. Its modern design, featuring steel, concrete, and glass, marked a significant shift in Melbourne's skyline and urban development. Listed on the Victorian Heritage Register since 1998, 140 William Street is celebrated for its architectural, historical, and technological significance, making it a notable landmark for both tourists and researchers interested in Melbourne's architectural evolution.