Look closely and you’ll notice that the color changes a third of the way up the tower.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

Supposedly Satanic numbers adorn this preserved submarine sail.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This super steep hike ascends 2,000 feet in less than a mile.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

This replica small town lets visitors take a stroll through the story of progress in the U.S. via thousands of Americana artifacts.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

An underground magnet for ever-changing street art.

This angular brutalist playground turns playtime into modern art time.

Scattered around Atlanta are little doors with big charm.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

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

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

Derelict buildings are all that remain of a complex at the site of one of the worst mining disasters in Montana history.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

Legends surround this jagged rock formation in the New Mexico desert.

This North Carolina grave is the final resting place of the world's most famous conjoined twins.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

See massive fossils that are over 200 million years old in northeastern Arizona.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.