the nymphaeum monument at jerash ancient roman town

landmark ruins building temple monument palace monastery fortification column history tourism nymphaeum part ancient greco-roman city jerash gerasa governorate jordan ity roman town arch architecture roman paris ancient europe monument arc landmark building travel city stone rome tourism triumphal triumph spain milan sky old historic arch hadrian jerash governorate jordan structure triple-arched gateway emperor nabataean columns capitals period middle east ulrich jasper seetzen traveler daylight blue clouds weather ruins modern historic site archaeology