At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

An existential riddle in the world's largest ancient castle.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

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.

Microscopic scenes; some call it novelty, some call it art.

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

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

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

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

A surreal statue honoring Prague's favorite literary son.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

A church of bones, decorated with 40,000 human skeletons.

A crucified and bearded female saint.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

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

Macabre astrological automaton clock dating to the late 1400s.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.