#1 Göreme Open-Air Museum (Nevsehir)
This Byzantine monastic complex carved into volcanic tuff in Cappadocia houses a dozen churches featuring remarkably preserved 10th to 12th century frescoes. The Dark Church and its lapis-lazuli blues are the highlight of the visit. UNESCO listed, the site takes 1.5 to 2 hours to walk, located 20 minutes from central Göreme.