Kaymakli Underground City sits 25 to 30 minutes by car from Goreme in Cappadocia. It holds kitchens, wine cellars, churches and living spaces, with four of its eight levels open to visitors. Red arrows at the entrance and blue arrows at the exit let visitors tour without a guide, and a full walkthrough takes about 30 minutes to an hour. The passages are narrow enough that visitors may have to crouch or may hit their heads.