A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

Two monstrous faces loom over a village in Czechia.

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

An Orwellian sculpture with eyeball cameras watches passersby.

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

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

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

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

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

Steadily reminding Czechia of its past.

A half-buried vehicle in Prague's is the latest iteration in a long-running piece by Czech artist David Černý.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

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

The last municipal pneumatic post system in the world was in operation for over 100 years, and may run again.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

More than 500 unique and specially designed cases collected by D.C.'s "Harmonica Case Man."

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

The district's only illusionarium supports free writing programs for local students with every purchase.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

A surprising, but overlooked example of geology in the middle of the nation’s capital.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.