Residents used it as refuge during the Arab-Byzantine Wars (780-1180 AD) and later Mongol invasions [1]. Abandoned in 1923 when Turkey's Greek Christian population was relocated, the city was accidentally rediscovered in 1963 when a resident found a hidden room behind his wall [1] [2].
Derinkuyu Underground City

Also known as: 데린쿠유, 데린쿠유 지하도시, Bandar bawah tanah Derinkuyu, Cidade subterránea de Derinkuyu, ciudad subterránea de Derinkuyu, Ciutat subterrània de Derinkuyu, Derinkuyu, Derinkuyu földalatti városa, Derinkuyuko lurpeko hiria, Derinkuyun maanalainen kaupunki, Derinkuyu (ondergrondse stad), Derinkuyu (stad)
| Type | Cave Structures |
|---|---|
| Period | 1500 - 500 BC |
| Country | Türkiye |
| Coordinates | 38.3736° N, 34.7355° E |
Türkiye