Stones speckled along Harris Avenue reveal hidden nuggets of the past.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Only gap in the 30,000-mile span of roads called the Pan-American Highway.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

An autonomous republic of Orthodox monks.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

These "bridges" help confused bats cross the road.

A unique waterfall that some believe attracts the fairfolk.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

When you can't get to the Pacific, just go to Florida.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

This shop for all your super spy needs hides an educational secret.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

Though nicknamed the “Russian Freighter,” this ship was actually sunk off the coast of Pensacola by the U.S. government in a top-secret operation.

In Twickenham sits a small whitewashed castle that inspired Mary Shelley's 'Frankenstein.'

The control tower at the historic weapons range is now available as a highly unusual vacation rental.

This British museum hopes to take the taboo out of poo.

A mysterious bridge over a sunken Roman road.

This disused Cold War bunker has been restored to all of its early 60s glory.