The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

It's a unique monument honoring a great character who inspired a generation of young women to be more and pursue their dreams.

The record holder for the world’s largest peach.

Part of a worldwide art project, this mysterious semicircle of concrete shapes holds the pieces of a larger story.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Nature and art meet in this curvy creation

Tucked away in the forests of Indiana resides an abandoned waterslide that is now a popular graffiti haunt.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Quite simply the largest tree in the world (by volume).

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

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

The world's longest known cave system.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A huge musical instrument played by the ocean.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

Symbolic attempt to overcome the issues of life.

The remnants of this unusual bridge await an uncertain fate.

The stoic structure boasts a whimsical set of stained glass art commemorating Lewis Carroll.

The shop where the girl who inspired the beloved character once bought sweets is now a book-themed commercial curiosity.

The beams of the New College, Oxford dining hall come with an amazing story.

A historic hotel library in Indiana hides more than a few secrets on its shelves.

The sole remaining outpost of a once-thriving South Carolina chain still sells “pic-a-nic” baskets.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.