Entering Petra: One must enter the ancient Nabatean city of Petra… | 
The "Treasury": The "Treasury" was actually not a treasure at all. It… | 
The Bab a-Siq: The cliffs that form the narrow canyon that leads to… |
There are many structures in Petra that are of a similar size to the… | 
Free-standing buildings were first erected in Petra by the Romans.… | 
Water Channels: Nabatean engineers carved channels in the sandstone… |
Water Channels: The water channels in the Bab a-Siq run for a few… | 
Clay Pipes: The pipes that brought water into the city were each… | 
Clay Pipes: Water flowed in the pipes under pressure. This was an… |
