1. U.N. Building
![U.N. Building U.N. Building](https://media.timeout.com/images/103438509/750/422/image.jpg)
![U.N. Building U.N. Building](https://media.timeout.com/images/103438509/750/562/image.jpg)
Opened in 1952, the U.N. building is one of greatest architectural icons in the world. Located in Turtle Bay, the U.N. stands out against Manhattan’s skyline at its site overlooking the East River. Constructed under the supervision of architect Wallace K. Harrison, the U.N.complex comprises two major buildings, each designed by a giant of modern architecture: Oscar Niemeyer, who created the 39-story Secretariat Building, and Le Corbusier who designed the swooping General Assembly building. Niemeyer’s tower was the first building in New York to employ a glass curtain wall for its eastern and western facades—a hallmark of the postwar International Style—while its north and south elevations are clad in Vermont Marble.