This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.

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

This former maximum-security prison is creepy, sobering, and supposedly haunted.

This maze-like, oceanfront gift shop—the nation’s largest— has been serving kitsch to the Myrtle Beach community for over 80 years.

This bridge is haunted by the ghost of a distraught mother.

A river runs through this remote valley in a very unexpected way.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

Abandoned railroad tunnel is home to a colony of three million Mexican free-tail bats.

Each summer, the migratory bats living beneath the bypass form "batnadoes" at dusk.

A Christian-themed amusement park and complex rocked by scandals.

The world's largest bioluminescent area was undiscovered by science until 2005.

Once the path of a railway tunnel, now home to thousands of glowing insects.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The steel hull of a wrecked tug rests on Lobster Cove on Monhegan Island’s rocky southeastern shore.

For thousands of years, Native American hunters drove buffalo straight off this cliff in Montana's Yellowstone Country.

A boat ride through utter darkness, lit only by headlamps, reveals an emerald green pool locals believe is sacred.

This vintage "streetcar boat" lay at the bottom of Lake Minnetonka until the 1980s.

The world's longest known cave system.

The simple log cabin of a famed loner and naturalist stands preserved as a symbol of the ultimate DIY lifestyle.

The king of U.S. high points towers over every other peak on the continent.

Stroll through a wonderland of stupendous moss-covered trees.

The illuminated falls are a gem in North Cascades National Park.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

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