6. One Vanderbilt
Estimated Cost: $3 Billion
This building’s unique design will soon stand tall across the Manhattan skyline as New York City’s 4th tallest building. Though the building itself will only be 57 floors, its spire will stand at around 1,400 feet. Developers began construction in 2015, but had to demolish the site, to make room for the new tower first. You can expect to see the new tower, standing next to Grand Central Station, in 2020.