Petra, one of the 7 wonders of the world, was the highlight of our trip in Jordan. I was astonished and impressed by the influence of Mesopotamian, Greek, Roman and Byzantinian Architecture evidently carved on the rocks. It seemed like a crash course that catapulted me back to History of Architecture class in college. (Darn, I should have paid more attention in class :-) Sir Banister Fletcher would have been handy at that time) It was a 3-hour hike under the scorching heat as we found temporary relief under the shade of huge mounds of ancient sculpted rocks. Memorable!