ruins of the ancient fortress histria, dobrogea, romania

657 7th abandoned ancient antique archeology architecture avar-slavic avarslavic black building century civilization columns country culture destination destroyed dobrogea east europe famous fortress founded greek heritage historic historical history histria invasions istria landmark landscape miletus monument nature old outdoor patrimony port relic remnants rocks romania ruins sea settlement settlers sightseeing site slabs stone stonework temple tourism travel vegetation vestige wall