Jerash - Columns - Jerash Is Known For The Ruins Of The Greco-Roman City Of Gerasa. Jerash Is Considered One Of The Most Important And Best Preserved Roman Cities In The Near East. It Was A City Of The Decapolis. After The Roman Conquest In 63 BC, Jerash And The Land Surrounding It Were Annexed By The Roman Province Of Syria, And Later Joined The Decapolis Cities. Photo