The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

An abandoned Byzantine fortress and notorious prison.

The abandoned summer estate of the former Greek Royal Family.

Ruins of a 13th-century fortress perched above a breathtaking Mediterranean bay.

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

A little-known park with unusual, half-ruined structures and a mystical energy.

A magical, if a bit tacky, 1960s castle conjures up medieval fairytales and Greek mythology.

One of the largest single-span stone-arch bridges in the Balkans looks like something straight out of a fairytale.

The Greek island's old British cemetery feels like a forgotten garden.

Seventeen oak trees sprout from the roof and walls of this tiny chapel without any visual evidence of roots.

These ruins in Volvi were once at the intersection of the Eastern and Western Worlds.

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

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

An autonomous republic of Orthodox monks.

A two thousand year old brothel uncovered in Northern Greece.

An alien landscape on the banks of the Aegean Sea.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

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.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

The hermits of Karoulia protect their asocial lifestyles by living on the vertical face of a treacherous precipice.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

A cave network located at the southernmost tip of mainland Greece was once believed to be an entrance to Hades.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.