Waterline Square is a 5-acre (2.0 ha), $2.3 billion luxury condominium and rental development near the Hudson River on the Upper West Side of Manhattan in New York City.

The complex includes three residential towers with 1,132 units and 3 acres (1.2 ha) of park, along with 100,000 square feet (9,300 m2) of amenity space.

[8] The plan, which involved design by Christian de Portzamparc, were never realized and the company sold the land to GID for $676 million in 2015.

[4][9] In November 2016, GID received $1.243 billion in construction financing from a consortium of lenders including Wells Fargo, HSBC, JPMorgan Chase and the National Bank of Abu Dhabi.

[14][15][16] The project was named New York City's fastest-selling condominium development in February 2018 by Architectural Digest, having sold 53 units worth over $200 million in just six months.

[10][24] Architectural firms Richard Meier & Partners, Kohn Pedersen Fox, and Rafael Viñoly respectively designed One, Two, and Three Waterline Square.

However, the west facade is composed of gray brick as a tribute to the historic brick-clad IRT Powerhouse adjacent to the building.

[31] Additionally, each individual building contains amenities centers with facilities such as outdoor decks, demonstration kitchens, dining rooms, and lounges.

[29] Ondel Hylton, also writing for City Realty, called the buildings' architecture "angular and somewhat tortured deconstructivist forms.

[37] Justin Davidson of Curbed wrote of Waterline Square Park in 2022: "Finally, at least some West Siders got a better outcome than just the compromises that their ancestors negotiated.