A former utopian healing center created by a huckster and built by derelicts.

High in the Sacramento Mountains, a facility dedicated to studying the sun.

The second-largest ceremonial mound in the United States is an artificial hill that is loosely shaped like a pentagon.

A brick-lined alley full of public artwork tucked away in downtown Gulfport.

A cheeky alleyway window hosts tiny rotating exhibits with outsized charm.

The intricate geometry inside this Baroque-style dome was designed to create "terror of the human soul."

A fake medieval village in the middle of Turin.

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.

The longest of the four remaining covered bridges in Missouri.

This art deco masterpiece was once a miracle spring mecca but is now simply a government office building.

This Kansas City studio was home to Walt Disney's first animation business.

A vineyard devoted entirely to an unexplored flavor frontier.

The oldest bar in Missouri is hidden within a limestone brewery cellar more than 50 feet underground.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

This massive railroad spike celebrates the 1939 premiere of the movie “Union Pacific.”

This once rural mansion now sits in the heart of the city.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.

Today this bizarre rooftop phone booth seems like a piece of kitsch but it was once used to spot disastrous storms.

The world's largest covered wagon is piloted by a giant Lincoln lawyer.

The empty tomb that houses the memories of Roy Bertelli's revenge.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

The mysterious white squirrels of this Illinois city are treated like sacred cows.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.