Petra, Jordan is an archaeological site in Arabah, Ma'an Governorate in Jordan. The site is constructed on the slope of Mount Hor in a basin among the mountains, which form the eastern flank of Arabah also known as Wadi Araba. Arabah is the large valley running from the Dead Sea to the Gulf of Aqaba. Petra, Jordan is well known for its magnificent rock cut architecture. Petra is also one of the new 8 wonders of the world.

Petra, Jordan remained undiscovered to the Western world until 1812, when it was known by Swiss explorer Johann Ludwig Burckhardt. Petra was famously described as "a rose-red city half as old as time" in a Newdigate prize-winning sonnet by John William Burgon. UNESCO has described it as "one of the most precious cultural properties of man's cultural heritage." In 1985, Petra was elected by the UNESCO as one of the World Heritage Sites.

Inhabited since prehistoric times, this Nabataean caravan-city is situated between the Red Sea and the Dead Sea. Petra was an important crossroads between Arabia, Egypt and Syria-Phoenicia. The site is half-built, half-carved into the rocky mountain, and is surrounded by mountains maze with passages and gorges. It is one of the world's most famous archaeological sites, where ancient Eastern traditions blend with Hellenistic architecture.