Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

This stunning concert hall has become a symbol of Iceland's national recovery.

This tiny museum's sizable collection is jammed into a former underground public toilet.

One of the most remarkable caves in all of Iceland was created by a once raging river of lava.

The world's only museum devoted to the wonders of fluorescence.

Tucked away in the Leiden city hall are a group of works by famed artist MC Escher.

On Japan's Tashirojima Island, cats are king.

This house's itty bitty size means no humans allowed.

Where the "World Pinball Champion” is crowned.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

This collection of over 50 classic pinball machines awaits visitors to downtown Roanoke.

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

Diego Rivera's massive tiled fountain and failed infrastructure project.

Visiting this cacophonous collection of vintage novelties is like stepping into the mind of a crazed toymaker.

Toy museum in a former tavern is the expression of one man's life pursuit of the aesthetic power of cartoon imagery.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

Walk through the history of American pop culture.

This free, take-a-book shop seems like a trick but isn't.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.