A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

An enormous natural sandstone bridge in Kentucky.

Moonbows over Kentucky.

The world's longest known cave system.

Packed with gear and memorabilia, this museum chronicles the history of skiing and how its rise shaped New England.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

This popular park is home to a sea serpent sculpture that now overshadows the twisted history of its creation.

It may take some time to locate, but it's sure to warm even a heart of stone.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Visit this playground of waterfalls, caves and sinkholes.

An office built to look like a giant basket.

A "hospital" where people went to be quarantined, die, and be buried in the yard.

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

Outsider art meets paleontology at this roadside reptile repository.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

A toxic ghost town sitting atop a massive coal fire.

A collection of artifacts from two worldwide industries that called Endicott, NY home.

This local landmark is home to art galleries and the area's only community darkroom.