The most visible portion of the project is a new rooftop structure that will replace an existing 1980s addition to the original 1940 building. The new, three-story addition will house events and other activities and will be clad in two different glass types. The volume’s lower, set-back portion will have a conventional-looking glass skin with doors opening onto a surrounding rooftop terrace, while the upper portion, however, will feature a slumped glass facade that, in renderings, has a shimmering, striated appearance. The textured skin subtly contrasts from the surrounding flat glass towers and floats above the limestone-clad building below.
The original seven-story building was designed by Cross & Cross, a major early 20th-century New York architecture firm that designed many buildings across the city and elsewhere.
Last year, OMA finished another major commercial Manhattan renovation project: the Sotheby’s New York headquarters. OMA expects to finish work on the Tiffany & Co. flagship in spring 2022.