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

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

A sharp sculpture made of thousands of pieces of jagged glass.

This small chapel holds the mummified heart of one of the heroes of the Greek Revolution.

A grotesque collection of wax limbs depicting the symptoms of venereal disease.

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

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

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

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

Large collection from the 3rd millennium BCE.

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

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

Where commuters walk through remnants of an ancient Greek necropolis.

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

Local legends say that a giant who tried to destroy a nearby church lived in this rock cave.

A unique sculpture designed to outline humanity's reliance on oil.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The history and future of cannabis.

Debatably clever, or just plain honest hotel advertised as "The Worst Hotel in the World."

This unattributed sculpture in Amsterdam is hiding in plain sight.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

A public urinal so pretty, it was declared a national monument.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Amsterdam's former hotspot for public executions and dissections.