One part local history, 99 parts gruesome haunted house.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Famously misunderstood wonder of the ancient world

The ruined doorway is a portal to the building's turbulent and torturous past.

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

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

This ancient hydrological marvel is now the base of a modern outdoor cinema.

Where commuters walk through remnants of an ancient Greek necropolis.

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

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

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.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

The hallucinogenic center of the ancient world.

Italian director Pier Paolo Pasolini fell in love with this lonely 13th-century tower while making his most famous film.

An abandoned bell tower in the middle of nowhere is the last testimony of a forgotten medieval village.

The walls and streets of the ancient city are peppered with penises.

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

Ancient ruins hidden underneath a modern luxury hotel.

This Italian stadium makes liberal use of fascist statuary to evoke classical sporting arenas.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

St. Francesca Romana, patron saint of drivers, resides in the church she founded.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.