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 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.

The largest church in Athens, this 19th-century cathedral is the spiritual headquarters of the Greek Orthodox Church. Its interior is lavishly and colorfully decorated.

This bald marble hill approached by slippery steps was home to the Athenian council and court, where Socrates was condemned and Paul spoke about "the Unknown God."