One57

One57, formerly known as Carnegie 57, is a striking skyscraper in Midtown Manhattan, standing on West 57th Street between Sixth and Seventh Avenues. The building is part of the area south of Central Park known as Billionaires' Row. Completed in late 2014, it measures 1,004 feet (306.1 meters) and has 75 floors. It was designed by architect Christian de Portzamparc, who worked for the Extell Development Corporation. With its rounded roof edges, setbacks, and vertical bands of glass in two contrasting colors, the facade recalls a cascading waterfall, with the top angled toward Central Park. Among the investors was Aabar Investments, an investment firm from Abu Dhabi, which financed most of the project.

The tower is mixed-use. The lower floors house the five-star Park Hyatt New York hotel with 210 rooms, as well as a private lobby, lounge, and restaurant for residents. From the 31st floor up, there are 92 luxury condominiums equipped with extensive recreational amenities. When it was completed, One57 was considered the tallest mixed-use building in the city and the tallest built with reinforced concrete. Today it ranks 17th among New York's tallest buildings, having been surpassed by newer skyscrapers. Construction costs came to around $1.3 billion, and the penthouse was listed at a price of $50 million.

The construction phase began in 2009 with site preparation after an older building had been demolished. In September 2012, the structure reached its final height, which was marked with a topping-out ceremony. During this period, in October 2012, the construction crane was badly damaged by Hurricane Sandy, leading to a temporary evacuation of the neighborhood. Despite these incidents, work on the facade and interior continued until the building officially opened during 2014.