A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

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

The attic of a four-century-old canal house hides a clandestine church.

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

A Spanish town built into the cliffs.

An eccentric collection of antique items shares space with a prop-quality witchcraft museum.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Rare karst landscape eroded from a flat seabed.

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

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

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

An extraordinary mechanical calculator designed by the mathematician and philosopher Gottfried Leibniz.

Abandoned substation turned village treasure.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

An intricate and amazing house built by architect Karl Junker.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

This German museum is devoted to all aspects of grave culture from headstones to coffins.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

A wunderkammer of exoticism immortalized by Tom Waits.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

An elevator into the Baltic Sea.

These beautiful objects represent beautiful ideas.