Kaymaklı, Nevşehir

Kaymaklı is one of Cappadocia's largest underground cities, hewn from the region's soft volcanic tuff and used as a refuge settlement from around the 6th century CE. Eight underground levels descend into the earth — four are open to visitors — connected by narrow tunnels and housing wine cellars, stables, ventilation shafts, and communal spaces that point to extended habitation by early Christian communities. The complex could shelter up to 2,000 people and was sealed from the inside using massive millstone doors, a defense mechanism against the Arab raids of the 7th and 8th centuries. Part of Göreme National Park, Kaymaklı has been a UNESCO World Heritage Site since 1985. Low ceilings and tight passages make it a physically immersive visit — and an atmospheric one for anyone drawn to the buried layers of Anatolian history.