I'm not sure if this is a fact.. but I think the land the UN building is on was once a Pig Slaughter House.. LOL! Wonder if the Islamofascists Leaders who visited know that.
Seems like I heard that somewhere too....now I need to look (keep the muzzies away if true?).
According to this, you're right!!
http://www.greenswardparks.org/books/rockefeller10.html
The United Nations headquarters building was constructed in New York City in 1949 and 1950 beside the East River on land purchased by an 8.5 million dollar donation from John D. Rockefeller, Jr.
http://en.wikipedia.org/wiki/United_Nations_headquarters