Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

Cold war icon and onetime "hole" in the iron curtain.

San Francisco's newly reopened hands-on science museum.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Explore an early California pioneer's rancho hidden in LA's manufacturing hinterland.

America's most famous piece of self-built architecture.

Chewing gum tycoon's memorial lies perched over wife's botanical gardens on Santa Catalina Island.

Cat art as far as the eye can see.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

Doris Duke's lasting collection of Islamic Art, hidden in a Hawaiian paradise.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Venice's island of the dead.

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

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

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

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

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

Steadily reminding Czechia of its past.

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

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

Macabre astrological automaton clock dating to the late 1400s.

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

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.