In July 1911, Hiram Bingham rediscovered the forgotten Machu Picchu site in Peru. Tomorrow, Peru will celebrate the 100th anniversary of this event. Bingham discovered the site on July 24, 1911, and wrote an article about the site for National Geographic magazine. Machu Picchu is the ruin of an ancient Inca city built more than 500 years ago. Today, it is the most popular tourist destination in Peru.

Learn more about Machu Picchu on National Geographic Traveler.

Watch a video about Machu Picchu on National Geographic Kids.

Get the facts on Peru on National Geographic Kids.

Photograph by Miguel Vilaxa, My Shot