Location of a reliquary containing bone fragments of 18 saints.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

It's a pretty creepy lock-up.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

This "Plant Farm Museum" is home to the divinely inspired and visionary outsider artwork of Reverend Howard Finster.

This Native American settlement dates back to the Pueblo II period.

A celebration of the animation wizard's childhood home and antique railroad memorabilia collection.

This 40-foot fowl marks the so-called "wild goose capital of the world."

This pristinely abandoned filling station on the edge of a graveyard is populated solely by unsettling mannequins.

A recreation of an Old West apothecary full of curios.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

One man's love for East Coast diner culture brought an entire eatery all the way from New Jersey to Colorado.

Final resting place of a 19th century gold prospector and convicted cannibal.

A memorial dedicated to the victims of the Columbine High School shootings.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

Home of the International Space Hall of Fame.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This is one really big nut.

The symbol was surreptitiously built into the river bank by German prisoners of war.