111 West 57th Street

111 West 57th Street, also known as the Steinway Tower, is a supertall residential skyscraper in Midtown Manhattan, New York City. Developed by JDS Development Group and Property Markets Group, it is situated along Billionaires' Row on the north side of 57th Street near Sixth Avenue. 111 West 57th Street consists of two sections: Steinway Hall, a 16-story former Steinway & Sons store at the building's base designed by Warren and Wetmore, and a newer 84-story, 1,428-foot (435-meter) tower adjacent to Steinway Hall, designed by SHoP Architects.

111 West 57th Street has 60 luxury condominiums: 14 in Steinway Hall and 46 in the tower. The residential tower has a glass facade with piers made of terracotta, and contains a pinnacle with setbacks on the southern side. When completed, the tower will be one of the tallest buildings in the United States, as well as the thinnest skyscraper in the world with a width-to-height ratio of about 1:24. Steinway Hall, a New York City designated landmark, contains a facade made mostly of brick, limestone, and terracotta, and was restored as part of the residential development. 111 West 57th Street contains numerous resident amenities, housed mostly in the building's base, as well as a large rotunda within Steinway Hall that is also a designated city landmark.

Steinway Hall opened in 1925 and served as a store, recital hall, and office building for almost nine decades. Plans for a residential skyscraper on the site date to 2005, with proposals for residential towers at 105–107 West 57th Street, adjacent to Steinway Hall. JDS acquired the lots at 105–107 West 57th Street in March 2012, and JDS and Property Markets Group purchased Steinway Hall the next year, giving them the lots at 109–113 West 57th Street. Work on the tower and on Steinway Hall's renovation began in 2014. The development has faced significant challenges, including financing difficulties, numerous lawsuits, controversies over the employment of non-unionized workers, and the indictment of a subcontractor. The tower's concrete form topped out during April 2019, and the development is expected to be completed by 2021.