Every spring, locals see the shadowy figures of a ghost army of slain Greek soldiers descend upon this ruined fort.

This little-known, 35,000-specimen collection in Greece is a lepidopterist's dream.

The historic tower houses of this nearly abandoned Greek town have been compared to the spikes on an iguana's back.

A sprawling collection of books and manuscripts about ancient Greece that would have put their famed libraries to shame.

The rocky remains of an ancient Greek forest.

This open air archeological site houses almost as much wildlife as it does classical religious artifacts.

The ruins of this monumental city founded by the first Roman Emperor are strangely overlooked by most travelers.

Local lore says two enemy dragons live within these breathtaking mountain lakes.

Temple complex that once housed the famous statue of Nike.

This town named for the ancient God of War is home to fewer than a thousand people, but it's the birthplace of the Greek Revolution.

Large collection from the 3rd millennium BCE.

An alien landscape on the banks of the Aegean Sea.

An ancient octagonal weather station named for the eight Greek gods of wind.

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

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

Giant marble phalluses on the sacred island of antiquity.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This legendary city has been a tourist attraction for centuries.

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

The hallucinogenic center of the ancient world.

An impromptu shrine appeared shortly after beloved "Torchwood" character Ianto Jones was killed off the show.

A wildlife paradise, this island is one of the world’s most important habitats for burrow nesting seabirds.

One of the world's oldest trees comes with a Welsh legend intertwining it with a spirit prophesying death.