Petra is a famous archaeological site in Jordan's southwestern desert.
Dating to around 300 B.C., it was the capital of the Nabatean Kingdom.
Accessed via a narrow canyon called Al Siq, it contains tombs and
temples carved into pink sandstone cliffs, earning its nickname, the
"Rose City." Perhaps its most famous structure is Al Khazneh, a temple
with an ornate, Greek-style facade.