The remains of the Pythagoreion, an ancient fortified port with Greek and Roman monuments and a spectacular tunnel, the Tunnel of Eupalinos or Eupalinian aqueduct, along with the Heraion of Samos were jointly registered as a UNESCO World Heritage Site in 1992.
Acropolis of Athens Aigai Old Town of Corfu Delos Delphi Epidaurus Mycenae and Tiryns Mystras Olympia Monastery of Saint John the Theologian and the Cave of the Apocalypse Daphni Monastery Hosios Loukas Nea Moni of Chios Meteora Mount Athos Paleochristian and Byzantine Monuments of Thessalonica: (Hagios Demetrios, Arch and Tomb of Galerius, Hagia Sophia, Church of Panayia Halkeion, Church of Saint Nicolaos Orfanou, Church of Agioi Apostoloi, Church of Acheiropoiitos, Monastery of Latomou, Church of Agios Panteleimon) Pythagoreion and Heraion of Samos Medieval city of Rhodes Temple of Apollo Epicurius at Bassae