5. Machu Picchu, Peru
Hidden for centuries, Machu Picchu was thrust into the spotlight after its rediscovery in 1911. The influx of tourists and constant threat of landslides placed this ancient Incan city at risk of irreversible damage. In response, UNESCO and Peruvian officials introduced strict conservation policies, limiting visitor numbers and stabilizing vulnerable structures. These efforts have helped preserve Machu Picchu’s breathtaking beauty and historic value. Learn more about its protection at UNESCO.
