Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Turntable anonymously received orphans, alms, and groceries.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

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

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

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.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The taxidermy remains of the first brown bear to enter Germany in 170 years.

A serious museum dedicated to two German comedians.

A small square plaque marks a failed assassination attempt that could have changed history.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

The footprint of a frustrated devil in Munich's Cathedral.

Housed in an old church, this hunting museum holds a collection of mythical bird-rabbit creatures.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

The patron saint of spinsters grasps a container of dried blood.

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

This wooden hotel is a temple to German sustainability and forest conservation.