This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

This century-old ruined temple was reborn as "The Church of Skate."

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A once-secret library of Freemason history in Catalonia.

The earliest known map to show America, discovered by accident at a Paris bookshop.

A completely underwater art museum sends a stark message about humans' impact on the environment.

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

Bacteria and algae give the salty water its bubblegum hue.

The most famous location in China was home to whole dynasties worth of imperial rulers.

A part of the world's largest marsh seems to be growing bright red Martian grass.

Sleep in a climate-controlled plastic bubble for the night.

The fantastic architectural models of a French traveler.

An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.

This professional clown's home is an outsider art wonderland.

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

Stroll through retro Paris while shopping for old postcards and discarded doll heads.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

France's most famous cemetery, with some of its most curious tombs.

A giant Australian fruit and tropical farm.

A forest full of mystical fantasy figures, nearly destroyed by recent fires.