Wikipedia "In 324 AD, Christianity became the religion of the empire and Philadelphia became the seat of a bishopric during the beginning of the Byzantine era. One of the churches of this period can be seen on the city's Citadel.
Philadelphia was renamed Amman during the Ghassanian era, and flourished under the Caliphates (with nearby capital) of the Ummayads (in Damascus) and the Abbasids (in Baghdad). It was then destroyed by several earthquakes and natural disasters and remained a small village and a pile of ruins until the Circassians settlement in 1887. The tide changed when the Ottoman Sultan decided to build the Hejaz railway, linking Damascus and Medina, facilitating both the annual haj pilgrimage and permanent trade, putting Amman, a major station, back on the commercial map."
"In biblical times, the country that is now Jordan contained the lands of Edom, Moab, Ammon, and Bashan. Together with other Middle Eastern territories, Jordan passed in turn to the Assyrians, the Babylonians, the Persians, and, about 330 B.C., the Seleucids. Conflict between the Seleucids and the Ptolemies enabled the Arabic-speaking Nabataeans to create a kingdom in southeast Jordan. In A.D. 106 it became part of the Roman province of Arabia and in 633–636 was conquered by the Arabs. In the 16th century, Jordan submitted to Ottoman Turkish rule and was administered from Damascus. Taken from the Turks by the British in World War I, Jordan (formerly known as Transjordan) was separated from the Palestine mandate in 1920, and in 1921, placed under the rule of Abdullah ibn Hussein."
-Attractions Petra, from Visit Jordan "Did you know that from the seven Ancient Wonders of the World only one wonder remains standing today?
Philon of Byzantium selected those wonders in 200 B.C. as a travel guide for fellow Athenians to explore the amazing man-made monuments in the known-world. -from Sevan Ancient Wonders-Vote! (Visit Jordan)