Walking Tour of Hadrian’s Arch in Athens Greece The triumphal arch, made of Pentelic marble, lies on an ancient street that led from the old city of Athens to the new section, built by Hadrian. (It was constructed in A.D. 131-132) Acropolis ancient civilization arch Athenian ATHENS athens greece walking tour bucket list europe vacation Greece hadrian Hadrian's Arch Mediterranean mediterranean destinations Mediterranean tour Mediterranean travel mediterranean trip mediterranean vacation Natural beauty of Greece old stone buildings Parthenon places to travel relax ruins SUN Temple of Olympian Zeus triumphal arch vacation walking