A City On The Mountain 

 

Look at the awesomeness of this giant gate. Petra, the city formed in a volcanic rock in Jordan. This place was originally built 100 years BC by the Nabatean people. Petra was first developed into a prosperous commercial center in Roman times because of its strategic location in Arabia. Inside there is also an underground river where the water is abundant. (Looks like the set of Transformers Movie 2)