• Petra was established in 312 AC, and it became the capital of the Nabateans people, who were referred to in the Bible. They inhabited the region of Petra between the IV AC and II DC.

  On the basis of discussions with Bedoul stone workers, and his own experience as an architect, R. calculates that “it would have taken approximately three years to complete el-Khazneh.

  
  

  Petra's amphitheater was carved out, too, from the mountain rock and can seat a maximum of 8,500 people. The amphitheater was dated back to the 1st century AD and was designed with features from the Hellenistic period. The majority of the theater's features have eroded due to the flash floods and earthquake that occurred in the city around 300 AD.

  
  

  During the first centuries BC to AD, Petra is believed to have been home to 20,000 – 30,000 people and was an important trading city. It then sat uninhabited for over five centuries until rediscovered by a Swiss explorer in 1812, hence the name the 'Lost City'.

Inside Petra, also known as the “Rose City”, is a labyrinth of archaeological wonders that has been around for over a thousand years. It is a testament to the ingenuity and organisation of the Nabatean civilisation.
You can't go inside the Treasury, but there's nothing to see. It's just an empty chamber. The Nabataeans, who carved the ancient city of Petra into the cliffs in the 1st century AD, were much more focused on the facade. There is simply a blank cubical hall inside the Treasury entrance, with smaller rooms branching off it, the entryway porch flanked by apartments with odd circular openings above their doorways. As per local belief, the Treasury is capped by a funeral urn containing a pharaoh's riches.