7. One57

One 57-57th Street-Hyatt-Super Slender Residential Skyscaper-Central Park West-NYC
One57 has been open for two years now, but at 1004 feet and 90 stories, it still surpasses the height of the five not-yet-finished super-slender towers mentioned before. One57 held the title for tallest residential skyscraper until it was beat by 432 Park Avenue. One57 is a design by architect Christian de Portzamparc, with a Park Hyatt hotel on the lower floors and luxury condos atop.