The Ancient LOST CITY of Petra - what's the Mystery of the Lost Ancient Technology?

There is something incredibly unique within the structural lay out of Petra - its building architecture. No where else in the world is there another one of a kind architecture, carved from a mountain wall without using primitive construction methods.

Although our modern building construction techniques had a great leap forward in terms of clear - cut engineering, nothing does compare the outstanding and systematic architecture Petra has to offer to the world.