Petra, is a historic and archaeological city in southern Jordan. Famous for its rock-cut architecture and water conduit system, Petra is also called the Rose City because of the colour of the sandstone from which it is carved. It is adjacent to the mountain of Jabal Al-Madbah, in a basin surrounded by mountains forming the eastern flank of the Arabah valley running from the Dead Sea to the Gulf of Aqaba. Access to the city is through a famously picturesque gorge called the Siq, which leads directly to the Khazneh. Jordon.