The Ciudad Perdida, or Lost City, is an ancient indegenous city high up in the Sierra Nevada. It was founded 650 years earlier than Peru’s Machu Picchu in around 800 AD. It had 2000 to 8000 inhabitants at its peak. It was found in 1975 by a group of treasure looters and has been under restoration and protection ever since.
Consisting of around 169 terraces, the city is connected through roads and plazas and can only be accessed from the river, 1200 steps below!