Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

With the touch of a button, you can read a randomly selected short story.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

The largest drain hole in the world.

This corn maze so big you may want to pack a lunch, and possibly a flaregun.

This graffiti-covered bridge is the quintessential vision of a place for disillusioned youth to escape the complexities of burgeoning adulthood.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

Seven ceramic sculptures are scattered around this California college campus.

This 19th century train workshop is a treasure trove of railroad history.

I Street Bridge is the heaviest swinging center bridge in the United States.

A replica of the first public theater built in California.

The California capital city once stood 10 feet lower than it does today.

The capitol city's oldest existing cemetery.

An eccentric home stands out in an otherwise average neighborhood with mosaics, mini topiaries, and kinetic sculpture.

An image of the legendary saint stands in the shadow of a cathedral she liberated.

A perfectly circular stronghold constructed in the 10th century is now a nucleus of Viking culture housing a museum, village, and reenactment of an epic Viking battle.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Denmark's famous pseudo-hill.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

Four alabaster giants contemplate the tides on the shore of Denmark.