An ancient site that has revealed incredible artifacts including portions of the Themistoclean Wall.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

These caves secretly held national treasures during World War II.

A Byzantine-era church hidden in a wooded area below the Acropolis.

This lesser-visited World Heritage site in Athens boasts an impressive ensemble of medieval gold mosaics.

Savor sheep milk yogurt at the last of Athens' dairy bars.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

This post-Ottoman era church in Athens was built by locals to serve the residents of Anafiotica

A martyred saint built a nunnery and school for girls here known as the "Parthenon."

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Legend says this sacred tree was a gift from goddess Athena.

An ancient Greek monument and a Byzantine church coexist inside this cave.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

A Byzantine church containing the holy remnants of three saints sits atop the site of an ancient temple.

Gladiators once walked this ancient, subterranean passage.

The only ancient site that remains on the south bank of the sacred Ilissos river.

A closer look at this somewhat faded hotel by the Corinth Canal reveals the architectural undertones of a genius.

This legendary city has been a tourist attraction for centuries.

Built by the Ancient Greeks, this chariot bridge is still in use today.

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

The hallucinogenic center of the ancient world.