Cappadocia is one of the most spectacular places in the World with its natural rock formations known as fairy chimneys and its historical and cultural heritage.
If you have only one limited day to explore the region, you should have a look this itinerary which is including highlights of Cappadocia:
The Panoramic View of Cappadocia, Pigeon Valley, Goreme Open Air Museum, Avanos, Underground City, Paşabagları (Monks Valley), Devrent (Imagination) Valley
...More