Established in 1638 to battle the Black Death, this botanical garden is a treasure trove of rare flora.

Museum preserving torture methods from the past.

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

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

Museum dedicated to the terror regimes of Hungary.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

Budapest's Communist-era statues, banished to the suburbs.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

The Habsburgs' royal collections of art and wonders.

The final resting place for the remains of 143 Habsburg royalty.

Legends surround an ancient tree trunk riddled with nails for good luck.

Handsomely crafted representations of our round planet.

Museum devoted to the artificial language of Esperanto.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Baroque celebration of the end of the Great Plague of Vienna.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

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

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

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

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

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.