One of the most asked question; Is Cappadocia only place in the world with these formations?
Answer is No.
Wherever you find stratovolcanoes, water and nature you might have this type of formations. What makes Cappadocia unique is not the formations, it is history of humanity. Otherwise you can find these formations even in different parts of Turkey.
You can take a look for these pictures that I shared.
Vanadocia (Van - Başkale)