The Kaymakli Underground City in Cappadocia region is world-renowned for its beauty and have 1 million visitors per year. Out of the 34 underground cities, it is the largest one and must-see site in the region. The city was started to be built by Early Christians in the first years of Christianity to protect themselves from the cruel persecution of the Roman Soldiers. The only official religion in Romans was the Pagan Religion until 4th century and the people who do not believe in that was brutally persecuted by the soldiers.

The Christians of Cappadocia found the solution of living underground when they realized soldiers were rounding up people for attacking their village. Kaymaklı Underground City is an elaborate maze made from tunnels, caves and one can easily get lost here as it is a huge complex.

Kaymakli Underground City has been listed as a part of UNESCO World Heritage List in 1985. The city has been opened to the visitors since 1964 and levels 1-4 have been unearthed so far. Kaymakli’s ventilation system ensured all rooms had equal access to oxygen via air shafts on every level; there are 18 separate vents for this 60 meter deep cave city. Even though, it is 60 meters deep originally, only 30 meter of the underground city are opened to visitors.