American Ghost Towns. Machu Picchu – Peru. The Incas built the estate around 1450, but abandoned it a century later. Often mistakenly referred to as the LOST CITY of the Incas, it is the most familiar icon of Inca civilization. Machu Picchu was voted one of the New Seven Wonders of the World in a worldwide Internet poll. Most archaeologists believe that Machu Picchu was built as an estate for the Inca emperor Pachacuti. Although known locally, it was unknown to the outside world before being brought to international attention in 1911. Like, Share and Subscribe. Thanks.