45 Ancient Ruins That Are Even More Stunning Than the Pyramids
18. Derinkuyu – Turkey’s Underground Metropolis
Imagine an entire city hidden beneath your feet, carved deep into the earth. Derinkuyu, one of the largest underground cities in the world, lies beneath the Cappadocia region of Turkey. Built over 2,000 years ago, this subterranean labyrinth could shelter up to 20,000 people, complete with living quarters, ventilation shafts, chapels, schools, and even stables. The network of tunnels and passageways was used by early Christians and others escaping persecution. The engineering marvel of this multi-level city, carved entirely out of soft volcanic rock, continues to astound visitors and scholars alike.
