The remains of a former logging boom town, crumbled away in the forest.

The site of the Wellington avalanche, one of the America's worst railroad disasters.

Four abandoned towers hidden above the Douglas fir forest in Washington.

Hundreds of hopeful gold miners came here to get rich, but only two years later the small town was deserted.

A natural sandstone bridge hidden in the Sewanee forest.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.

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

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

Mile-long cave system near Great Smoky Mountains.

More than five miles of underground passageways.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Visit this playground of waterfalls, caves and sinkholes.

Enormous lake at the bottom of a unique cave system.

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

Stroll through a wonderland of stupendous moss-covered trees.

A short hike into the mountainside forest reveals a decaying 1890s town.

At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

An electrifying collection of gadgets and literature from the 16th through 20th centuries.

A nearly abandoned 19th-century town on the Palouse.

This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

This scenic gorge is named after one of the most famous Bigfoot attacks in pseudohistory.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

Tour the original street level of Port Angeles, buried underground in 1914.