Places GunRalf The Grey Wants to Go

This historical Netherlands fortress still bears the marks of its single siege.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

Incredible labyrinth of man made caves.

This legendary dessert was served to Nobel laureates for decades.

This "flat geyser" bubbles up out of the ground periodically like a disappearing river.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

For one day every month Barcelona's Estació de França transforms into a market for model trains.

A beautiful little museum hidden away in the heart of Barcelona holds a treasure trove of Ancient Egyptian artifacts

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

This Funeral Hearse Museum represents the finest in cadaver transportation.

Turntable anonymously received orphans, alms, and groceries.

A temple to modernity, tucked away amid Barcelona's more well known museums.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

A beautiful but toxic fountain of mercury.

This semi-secret storybook hedge maze is also the oldest garden in the city.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

This historic Amsterdam bar used to accept sailor's monkeys as payment.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

This dockworkers' lunch joint has been left leaning by a century of storm floods.

A fascinating little museum dedicated to the thousands of chemical substances concealed in our food.

A wunderkammer of exoticism immortalized by Tom Waits.

Model Trains and Much More in Hamburg.