Petra is the vast remains of an ancient city carved into the rocks and canyons bordering Jordan's Wadi Araba. While the location has been inhabited for over 7,000 years, most of the building you see was done by the Nabataeans over two thousand years ago.
Geologically, the landscape is much like the Red Rock Country of Utah.
To get an idea of how truly vast the ancient city is, you can explore this very high resolution image I made from over sixty frames with a telephoto lens. And this view shows merely a fraction of the extent of Petra.
See how many tombs, dwellings and ruins you can pick out of the landscape. See if you can find the Roman amphitheater and the "urn" atop the "Monastary".
If things look blurry as you zoom in, just wait....your computer is busy downloading the next chunk of data for you to see. You should be able to zoom in 100% and have everything perfectly sharp.