Trump first set sights on the old granite and limestone Bonwit Teller building at the corner of Fifth Avenue and 56th Street in the mid-1970s. It was a time of street gangs and violent crime, when New York City was known more for the Son of Sam serial killer than for glamour and style.

"In the real-estate business we have a generic term for the best location, wherever it is: The Tiffany location. And Trump Tower is literally that - it looks down on Tiffany’s,” he would later tell Architectural Digest.

His plan was to tear it down and redevelop in what was becoming his trademark business style.

He took the city to court – and won – to get millions of dollars in tax breaks. He destroyed two Art Deco sculptures that had been a part of the original building’s facade to save $500,000 (£396,000), instead of donating them to the Metropolitan Museum of Art like he promised (infuriating New York’s history buffs). And he bought air rights over Tiffany’s, a zoning law which essentially means a neighbouring building would never rise up to block his sweeping views.

As the glass skyscraper grew taller, so too did Trump’s tales. When Trump Tower was completed in 1983, he boasted it had 68 floors. It only had 58.

Trump’s exaggerations were used to promote his tower - and the building was vital to promoting Trump.

A year before it opened, Trump appeared in Forbes Magazine’s first-ever rich list by claiming a net worth of $100m. Trump Tower was at the heart of his case to get on that list.

In reality, Trump was worth only $5m. Former Forbes researcher and writer Jonathan Greenberg told BBC News he only discovered this deception of wealth much later.