"Machu Picchu is a UNESCO World Heritage Site, both cultural and natural. Since its discovery in 1911, growing numbers of tourists visit the site yearly, reaching 400,000 in 2000. As Peru's most visit
A UNESCO World Heritage Site of both cultural and natural significance, it draws hundreds of thousands of visitors each year. © young shanahan from Bogotá, Colombia, CC BY 2.0, via Wikimedia Commons

More on this story