Greece - Pythagoreion and Heraion of Samos

"Many civilizations have inhabited this small Aegean island, near Asia Minor, since the 3rd millennium B.C. The remains of Pythagoreion, an ancient fortified port with Greek and Roman monuments and a spectacular tunnel-aqueduct, as well as the Heraion, temple of the Samian Hera, can still be seen." 

Source: UNESCO World Heritage