The General Assembly Building at the United Nations headquarters in New York City is an example of the modernization of building technology after World War II. The structure has a steel frame with English limestone flanking the east and west facades. The north facade is comprised of translucent glass panels, set into marble piers, corresponding with the 53.5-foot high plate glass window of the south facade, also set within a marble frame. The sloping roof and shallow copper dome on top of the steel structure demonstrate the dismissal of classical proportions in Modernist architecture and construction. The design and construction of the General Assembly building and the entire United Nations complex remains a monument to the international organization in the postwar era. At the time of construction, these structures provided a symbol of the unification of the world with the intention of maintaining peace.