The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

A slice of central Asia in the middle of Berlin.

The most visited, and possibly most controversial, museum in Germany.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

The soulless eyes of 82 bronze children stare on forever in remembrance of a horrifying World War II massacre.

Two stunning 17th-century libraries and a cabinet of curiosities.

Tucked away in a Prague park, a statue beloved by romantics honors a poet so nice they buried him twice.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Steadily reminding Czechia of its past.

Countless grotesque faces stare out from this eerie Prague art wall.

This automated sculpture of two men peeing will spell out text messages with their micturition.

Monument to a suicide protesting the Soviet invasion.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

A mocking tribute to the past and modern leadership of Prague.

This bar and museum are devoted to the controversial comic book work of Kája Saudek.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Macabre astrological automaton clock dating to the late 1400s.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.