petra

Petra (Arabic: ٱلْبَتْرَاء‎, romanized: Al-Batrāʾ; Ancient Greek: Πέτρα, "Stone"), originally known to its inhabitants as Raqmu, is a historical and archaeological city in southern Jordan. Petra lies on the slope of Jabal Al-Madbah in a basin among the mountains which form the eastern flank of the Arabah valley that runs from the Dead Sea to the Gulf of Aqaba. Petra is believed to have been settled as early as 9,000 BC, and it was possibly established in the 4th century BC as the capital city of the Nabataean Kingdom. The Nabataeans were nomadic Arabs who invested in Petra's proximity to the trade routes by establishing it as a major regional trading hub.The trading business gained the Nabataeans considerable revenue and Petra became the focus of their wealth. The earliest historical reference to Petra was an unsuccessful attack on the city ordered by Antigonus I in 312 BC and recorded by various Greek historians. The Nabataeans were, unlike their enemies, accustomed to living in the barren deserts, and were able to repel attacks by taking advantage of the area's mountainous terrain. They were particularly skillful in harvesting rainwater, agriculture and stone carving. Petra flourished in the 1st century AD, when its famous Khazneh structure – believed to be the mausoleum of Nabataean king Aretas IV – was constructed, and its population peaked at an estimated 20,000 inhabitants.Although the Nabataean kingdom became a client state of the Roman Empire in the first century BC, it was only in 106 AD that it lost its independence. Petra fell to the Romans, who annexed Nabataea and renamed it as Arabia Petraea. Petra's importance declined as sea trade routes emerged, and after an earthquake in 363 destroyed many structures. In the Byzantine era several Christian churches were built, but the city continued to decline, and by the early Islamic era it was abandoned except for a handful of nomads. It remained unknown to the world until it was rediscovered in 1812 by Johann Ludwig Burckhardt.The city is accessed through a 1.2-kilometre-long (0.75 mi) gorge called the Siq, which leads directly to the Khazneh. Famous for its rock-cut architecture and water conduit system, Petra is also called the Rose City due to the color of the stone out of which it is carved. It has been a UNESCO World Heritage Site since 1985. UNESCO has described it as "one of the most precious cultural properties of man's cultural heritage". In 2007, Al-Khazneh was voted as one of the New7Wonders of the World. Petra is a symbol of Jordan, as well as Jordan's most-visited tourist attraction. Tourist numbers peaked at 918,000 in 2010; but there followed a slump due to the political instability generated by the Arab Spring affecting countries surrounding Jordan. However, tourist numbers increased subsequently. About 800,000 tourists visited the site in 2018.

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