The smallest post office in the United States is no bigger than a broom closet.

In the depths of the Everglades, one man has dedicated his life to studying the elusive Skunk Ape.

The only road through the heart of Glacier National Park.

Only known mainland rookery of the threatened Stellar sea lion.

A massive sea stack famous for its appearance in The Goonies.

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

This replica of the Greek structure is in the heart of Nashville.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The second oldest continuously operating bar in Louisiana.

The magic's in the hole!

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A wall of chewing gum moonlights as collective art.

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

Fossils, railroads, and waterfalls!

This massive roadside mascot was the first version of the giant to illustrate his butt.

A beautiful geyser under environmental threat.

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

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

"Polynesia on the Plains."

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

A grandiose octagonal home crowned by a large dome stands out among the antebellum mansions.