Machu Picchu - stock photo

Separated into three areas - agricultural, urban, and religious - the structures are arranged so that the function of the buildings matches the form of their surroundings. The agricultural terracing and aqueducts take advantage of the natural slopes; the lower areas contain buildings occupied by farmers and teachers, and the most important religious areas are located at the crest of the hill, overlooking the lush Urubamba Valley thousands of feet below.