This once-derelict building is now one of the most beautiful bookstores in the world.

Fantastic views and thousands of love locks.

A preserved college lock-up that recalls a clubhouse approach to discipline.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

The highest cold-water geyser in the world.

Every half hour the eye-rolling clock face sticks out its tongue to mock the good citizens of Koblenz.

An ancient pagan site swirling with legends in the foothills of Franconian Switzerland.

The largest collection of handbags in the world, the oldest of which were used to carry Bibles, primarily by men.

The facade of this bank has changed little over the centuries, including its unique welcome sign.

A unique work of automotive art calls this shopping center home.

A set of seven houses, each built in a style that represents a European country.

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

A rare tour of an aristocrat's private home reveals valuable 17th-century paintings from artists like Rembrandt.

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

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

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

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

Shimmering sea-colored mosaics and Jesus statues cover this opulent building.

A whimsical art tower at a Bavarian brewery includes a grotto for its mythical beer-brewing dwarves.

This riverside restaurant has been serving customers since 1146.

This strange sculpture depicts a giant nightmare hare crushing a man to death beneath its colossal bulk.

Nestled on the banks of a river in Nuremberg is a small museum that was once home of the city's official executioner.

This lurid German fountain plots the sad course of marriage from dating to death.

A unique collection of electric insulators on display in a former transformer station.