Chapultepec, more commonly called the "Bosque de Chapultepec" in Mexico City, is one of the largest Nature Value Area´s in Mexico, measuring in total just over 866 hectares. Centered on a rock formation called Chapultepec Hill, one of the park's main functions is as an ecological space in Greater Mexico City. It is considered the first and …Chapultepec, more commonly called the "Bosque de Chapultepec" in Mexico City, is one of the largest Nature Value Area´s in Mexico, measuring in total just over 866 hectares. Centered on a rock formation called Chapultepec Hill, one of the park's main functions is as an ecological space in Greater Mexico City. It is considered the first and most important of Mexico City's "lungs".