Petra

@Sujit: Thanks, Sujit. Petra is a Unesco World Heritage Site, in Jordan. It's a vast, unique city, carved into the sheer rock face by the Nabataeans, an industrious Arab people who settled there more than 2000 years ago, turning it into an important junction for the silk, spice and other trade routes that linked China, India, and southern Arabia with Egipt, Syria, Greece and Rome.
It's a very nice place.

@gato x liebre: Muchas gracias, gato x liebre

@Rui Borges: Gracias, Rui