11. Derinkuyu’s Ancient Underground City
Place: Derinkuyu,
Turkiye Year of Discovery: 1960s
Estimated Value: Not Given
While remodeling his home, a Turkish man discovered the entrance to the world’s oldest underground city, one of the most puzzling archeological finds ever. The entryway led to the eighteen-story subterranean city, which extended down to a depth of 250 feet in certain areas.
Derinkuyu’s Ancient Underground City @OKEANOS TRAVEL/getyourguide.com
One of the greatest mysteries that confound humanity is the origins of this underground city and the reasons behind its abandonment.