the gate of domitian leading to the cardo the colonnaded main street in hierapolis above pamukkale, turkey

amphitheatre arch archaeology architecture autumn blue calcium carbonate cardo cascade cascades castle city civilisation colonnaded columns cotton culture denizli domitian early empire formation gate hierapolis lake landmark landscape leading levels limestone main mediterranean minerals monument old pamukkale patterns pool province roman ruin ruins sky snowwhite spring stone street summer sunshine terrace thermal tourism travertine turkey turquoise unesco upper waterfall wonder