The vaulted passageway, under the courtyard of the Temple of Zeus, is a good starting point in Jerash's ancient city. When your eyes become accustomed to the gloom, you’ll see a superb display of columns, pediments and masonry carved with grapes, pomegranates and acanthus leaves. This is a good place to brush up on the three main column styles: Doric, Ionic and Corinthian.
It is the gallery here that's worth seeing: the legacy of Rome has endured because of the ‘built to last’ quality of each structure. Take a look at the model of the Temple of Zeus as it will help to recreate the ruins in your mind later.
