Amman (; , ; Ammonite: 𐤓𐤁𐤕 𐤏𐤌𐤍 Rabat ʻAmān) is the capital and the largest city of Jordan, and the country's economic, political, and cultural center. With a population of 4,061,150 as of 2021, Amman is Jordan's primate city and is the largest city in the Levant region, the fifth-largest city in the Arab world, and the ninth largest metropolitan area in the Middle East. The earliest evidence of settlement in Amman dates to the 8th millennium BC, in a Neolithic site known as 'Ain Ghazal, where the world's oldest statues of the human form have been unearthed. During the Iron Age, the city was known as Rabat Aman and served as the capital of the Ammonite Kingdom. In the 3rd century BC, Ptolemy II Philadelphus, Pharaoh of Ptolemaic Egypt, rebuilt the city and renamed it "Philadelphia", making it a regional center of Hellenistic culture. Under Roman rule, Philadelphia was one of the ten Greco-Roman cities of the Decapolis before being directly ruled as part of the Arabia Petraea province. The Rashidun Caliphate conquered the city from the Byzantines in the 7th century AD, restored its ancient Semitic name and called it Amman. Throughout most of the Middle Ages, the city alternated between periods of devastation and abandonment and periods of relative prosperity as the center of the Balqa region. Amman was largely abandoned from the 15th century until 1878, when Ottoman authorities began settling Circassians there. Amman's first municipal council was established in 1909. The city witnessed rapid growth after its designation as Transjordan's capital in 1921, receiving migrations from different Jordanian and Levantine cities, and later several successive waves of refugees: Palestinians in 1948 and 1967; Iraqis in 1990 and 2003; and Syrians since 2011. It was initially built on seven hills, but now spans over 19 hills combining 22 areas, which are administered by the Greater Amman Municipality. Areas of Amman have gained their names from either the hills (jabal) or the valleys (wadi) they occupy, such as Jabal Lweibdeh and Wadi Abdoun. East Amman is predominantly filled with historic sites that frequently host cultural activities, while West Amman is more modern and serves as the economic center of the city. Approximately one million visitors arrived in Amman in 2018, which made it the 89th most-visited city in the world and the 12th most-visited Arab city. Amman has a relatively fast growing economy, and it is ranked