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

Legendary site where an evil bishop was devoured by rodents.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

Tiny castle in the middle of the Rhine made you pay to pass.

Hear the quietest sound from across the dome.

The walls of the iconic dome are hollow and have a secret stairway.

A little sculpture with a large wardrobe.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

The world's only museum devoted to the wonders of fluorescence.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A lush indoor jungle fills this bustling Madrid transportation hub.

The world's largest wooden structure.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

A Spanish town built into the cliffs.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This massive library holds what was once the largest book collection in the world.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The vast, legendary catacombs hold secrets much stranger than stacked bones.