The penthouse unit of 50 United Nations Plaza is leased by the U.S. Government as the residence of the United States Ambassador to the United Nations. The 5,900 sqft apartment, designed by architect Sir Norman Foster, has floor-to-ceiling windows which overlook the United Nations, across the East River and Brooklyn. Throughout the rest of the full floor apartment, there are 360 degree views of all of Manhattan.
Homes - Celebrity - Government
Links: en.wikipedia.org, skyscraperpage.com