Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

A beautifully eclectic mix of architectural styles.

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

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.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

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

Aged nearly 1,700 years, the world's oldest bottle of wine is probably still drinkable.

A crumbling bakery where forced laborers from the nearby concentration camp toiled to feed their fellow prisoners and Nazi soldiers.

A sweet museum focused on beets.

Come stay at a live-in art installation.

The abandoned remains of this Victorian brewery hide crumbling bowling alleys and rusting industrial gear.

An old department store turned Nazi prison turned artist commune.

A museum dedicated to a Cold War era sausage.

An abandoned swimming pool decays on the outskirts of Berlin.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

A memorial for a racecar driver who died while trying to set a land speed record on the autobahn.

Take a stroll through the history of prams, carriages, and other ways we move babies around.

A decomissioned facility where the German "Transrapid" maglev trains were once tested.