On completion, the Empire State became the world’s tallest building, towering at 1,250 feet (381m) to the top of its spire. Its weight of 365,000 tonnes included 730 tonnes of stainless steel and aluminium, as well as 200,000 cubic feet of Indiana limestone and granite. It retained the title of world’s tallest man-made structure for nearly 40 years, until the first World Trade Center tower was finished in 1970. Its current height is 1,454 feet (443m, courtesy of a new antenna fitted in 1985), making it the fourth tallest building in New York City, the sixth tallest in the US, and 43rd tallest tower on Earth.