Petra is an archaeological site in Jordan that is renowned for its rock-cut architecture. It is also one of the New Wonders of the World. The Rose City of Petra has been described by Unesco as "one of the most precious cultural properties of man's cultural heritage".
The impressive eastern entrance leads steeply down through a dark, narrow gorge called the Siq, a natural geological feature formed from a deep split in the sandstone rocks and serving as a waterway flowing into Wadi Musa. At the end of the narrow gorge stands Petra's most elaborate ruin, The Treasury or 'Al Khazneh', hewn into the sandstone cliff.