005- Roman Period
The three basic column styles that originated in Greece and were later adopted by the Romans are Doric, Ionic, and Corinthian. The Doric is the oldest and simplest style, characterized by a smoothly rounded column capital. The Ionic style is characterized by a column capital with a pair of spirals. The Corinthian style is characterized by a column capital elaborately decorated with leaves and scrolls.
Doric columns can be found in Qasr al-Abd near Amman. Ionic columns are common in the oldest structures in Jerash, including the Oval Plaza. Corinthian columns are common in the newest structures in Jerash, including the section of the colonnaded street between the Oval Plaza and the Artemis Temple, which was upgraded in the 2nd century CE.