This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Museum dedicated to the terror regimes of Hungary.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

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

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

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

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

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

Steadily reminding Czechia of its past.

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

Macabre astrological automaton clock dating to the late 1400s.

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

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

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.

Monument to a suicide protesting the Soviet invasion.

A crumbling hospital from the 1850s on Roosevelt Island.

Site of the first pathological and bacteriological research facility in the United States.

One of only two commuter aerial tramways in the United States.

Hear the quietest sound from across the dome.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This community on a small Venetian island has taken to painting their houses in bright neon hues.