Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

Oddly enough, a pair of Wolfs funded the construction of this Little Red Riding Hood sculpture.

This airport currywurst stand is made out of retro airplane parts.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

King Ludwig I's collection of beautiful women.

This striking art museum holds an amazing series of curiosity cabinets.

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

An antiquated German apothecary on Chicago's North Side.

An unassuming store hides relics of its former life as the jazz club that hosted some of the best black performers of the 1920s and '30s.

Over 1,000 pieces of one of the most niche art objects imaginable: the glass paperweight.

Illegal drag racing two stories beneath Chicago’s streets.

Years of archaeology, just chillin' by the water cooler.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Venice's "Island of the Mad."

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

This high desert botanical garden is a unique display of Northern New Mexico's geology.

A church dedicated to the Mexican skeleton saint.

This chicken coop pays homage to a classic architectural style made famous throughout the southern United States.

A pocket of jungle amidst urban expansion in Panama.

Oldest unrestored plantation house in America that is open to the public.