Published 27 July 2009, on Mundo Hoteles in an article on the Hilton Buenos Aires...
Interestingly enough, the shot used is of the Argentine version of the U.S. White House, Casa Rosada. There is no image of the Buenos Aires Hilton nor is there mention in the article of Casa Rosada. Hmmm.
See for yourself:
Shot on 11 July 2003... Casa Rosado