Hi Hawaii,
I know that Brian has put up a photo of what he could find regarding the location, but i think that it's not the right one since it is in the middle of a residential area. I did find this however....
Niños Héroes =
The Niños Héroes were six teenage military cadets who died defending Mexico at Mexico City's Chapultepec Castle (then serving as the Mexican army's military academy) from invading U.S. forces in the 13 September 1847 Battle of Chapultepec.http://en.wikipedia.org/wiki/Ni%C3%B1os_H%C3%A9roesChapultepec =
Chapultepec (Chapoltepēc, "at the grasshopper's hill" in the Nahuatl language; cf. Mexican Spanish chapulín (grasshopper)) is a large hill on the outskirts of central Mexico City. It has been a special place for Mexicans throughout Mexican history, and it was on this hill that the Aztecs made a temporary home after arriving from northern Mexico in the 1200s.http://en.wikipedia.org/wiki/Chapultepec_Park 
Dolores