An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

The juke joint where legendary soul artists ate, drank, and made merry.

The "Jade Museum" is full of thousands of intricately carved works of art made from various precious stones.

Home to drunken tower-climbing goats... seriously.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Walk the whole Mississippi River!

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

A park full of outsider art, created by college students studying outsider art.

The only thing better than tubing down New Jersey's scenic Delaware River is doing so while eating a hot dog from a giant floating stand.

This might just be the TARDIS of bookstores.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

This recreation of a 19th-century dime museum is full of oddities.

A diorama of the Civil War, fought by cats.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

World Trade Center memorial likened to a woman's sexual organ.

The first partially complete dinosaur skeleton was discovered here, forever changing the world's view of the ruling reptiles.

World's first "penitentiary," meant to be humane, drove men insane.

The mysterious canine hides atop a drain pipe on the back of the building, some say as a sneaky shoutout to Yale.

A failed piece of Orientalism has become the proud symbol of a community.

A field of nothing but boulders which resembles a giant's gravel driveway.