When you exit the Open-Air Museum, don't forget to cross the road to visit the Tokalı Kilise (Buckle Church) 50m down the hill towards Göreme and covered by the same ticket.
This is one of Göreme's biggest and finest churches, with an underground chapel and fabulous, recently restored, frescoes painted in a narrative (rather than liturgical) cycle.
Entry is via the barrel-vaulted chamber of the 10th-century 'old' Tokalı Kilise, with frescoes portraying the life of Christ. Upstairs, the 'new' church, built less than a hundred years later, is also alive with frescoes on a similar theme.
The holes in the floor once contained tombs, taken by departing Greek Christians during Turkey's population exchange.