This iconic door that leads nowhere is the entrance to an unfinished Temple of Apollo that faces exactly toward Delos, the god's birthplace. It was begun about 530 BC.

The famous Temple of Athena Parthenos, built in 440 BC, crowns the Acropolis. It was a major sacred site and is considered one of the finest examples of Greek architecture anywhere.

Located 48 miles west of Athens, Corinth was an important Greek city that also played a prominent role in the life of the Apostle Paul. Ruins include Temples of Apollo, Aphrodite and Octavia.

This 11th-century Byzantine monastery and World Heritage Site is famed for the golden mosaics that cover its walls.

This fine Doric temple was built just two years before the Parthenon, dedicated to the god of volcanoes and metalworking.

Home to the famous Oracle of Delphi, this mountain sanctuary was the holiest site in Ancient Greece. It was believed to be the center of the world, marked by the sacred Omphalos stone.

This little 14th-century monastery of the Meteora is approached by a relatively gentle path. Inside it features splendid frescoes by famed Cretan painter Theophanes the Monk.

This archaeological site is best known for the Gortyn Code, a stone-inscribed law code from 500 BC. Also here are the ruins of several Roman temples and the 6th-century Basilica of St. Titus.