The first scientific map of Amman, 1881. The British surveyors noted that: "The Roman period... is the most important period at 'Amman, and the ruins are only surpassed in Syria by those of Jerash, Baalbek and Palmyra, which belong to the same period... The Circassian colony established by the Sultan at Amman about 1879 is neither prosperous nor likely to become so."