A man in Turkey broke through a wall in his basement and accidentally discovered Derinkuyu, an ancient underground city with 18 levels.
In 1963, a resident of the Turkish town of Derinkuyu accidentally discovered an ancient underground city beneath his home when he broke through a wall in his basement during renovations. Behind it lay a vast labyrinth of 18 levels, capable of sheltering up to 20,000 people.
The city was carved directly into volcanic rock and included living quarters, kitchens, warehouses, chapels, and ventilation shafts. Enormous stone doors helped protect residents during wars and attacks.
Today, Derinkuyu is considered one of the most amazing underground cities in the world and one of the main attractions of Cappadocia.