Mind-boggling, breathtaking, and incredible is the massive ancient underground city discovered beneath a house that was being renovated in Turkey, and is still to this day being further uncovered.

Derinkuyu Underground City is an ancient multi-level underground city in the Derinkuyu district in Nevehir Province, Turkey. It is on the road between Nevehir and Nide, at a distance of 29 km from Nevehir. With its thirteen floors extending to a depth of approximately 85 m, it was large enough to shelter well over 20,000 men, women, and children.

It is the largest excavated underground city in Turkey and is part of a network of several underground complexes found across Cappadocia. It also has individual quarters, shops, communal rooms, tombs, arsenals, livestock, and escape routes. There’s even a school, complete with a study room.