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In 312 BCE, the Seleucid forces attacked the city but failed at occupying it. This was the first time forces had tried to attack Petra, and it made Petra known to more of the world because of the attack ("Petra", Britannica).

Image Source: 2008 Thomas Lessman on Wikimedia Commons

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Petra was a hereditary monarchy. Its golden age happened under King Aretas IV. Under him, the city prospered, the population grew, and the city's most famous architecture appeared. He ruled from 8 BCE to 40 CE (Hutchinson).

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In 106, the Romans conquered the Nabataeans, and Petra was annexed by Rome. In the beginning, even though it was now under Roman rule, it continued to be a center for trade.  Later under the Romans, it began its decline and ended up in ruins ("Petra", Britannica).

Image Source: 1890 Wikimedia Commons

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1812 CE- Petra is found by Johann Ludwig Bruckhardt 

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1812 CE- Petra is found by Johann Ludwig Bruckhardt 

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Johann Ludwig Burckhardt was born on November 24, 1784 in Switzerland. He was a European explorer and discovered the city of Petra in 1812. He studied in England, and he went on to travel and explore the world. He died in Cairo in 1817 ("Johann Ludwig Burckhardt").

Image Source: Unknown author on Wikimedia Commons

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1985 CE- Petra is made a UNESCO World Heritage site

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1985 CE- Petra is made a UNESCO World Heritage site

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Petra was made a UNESCO World Heritage Site in 1985. It was made a UNESCO site because it represents human creativity, represents a unique civilization that no longer exits, and portrays a unique style of architecture ("Petra", UNESCO).