One57, formerly known as Carnegie 57, is a 75-story (marketed as 90-story) skyscraper currently under construction at 157 West 57th Street in the Midtown neighborhood of Manhattan, New York City. Upon completion in 2013, it will stand at 306 meters (1004 feet) tall, making it one of the tallest buildings in the city. The building will have 135 residential units on top of a Park Hyatt Hotel with 210 rooms. The bottom of One57 touches the neighboring buildings due tothe limited space of the property.