The "Prussian Versailles" that is as glorious today as when it was built.

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

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

A little sculpture with a large wardrobe.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A small but immensely extravagant palace built by the "Night King."

The fairy tale castle of the "fairy-tale king."

The only visible piece of San Francisco's most famous shipwreck.

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

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

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

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

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

Contrary to popular belief, this secluded statue doesn't represent Pennsylvania's founder.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

A layered tribute to the work of mosaicist Isaiah Zagar.

Seller of surplus nuclear research materials.

Albuquerque found the perfect use for tumbleweeds at Christmastime.

A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.

This highest peak in New Mexico is named after an explorer who had a habit of lending his monicker to peaks.