In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

This homegrown adoption center offers a wonderland of feline companionship.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

The small cave that housed Tennessee's "first citizen."

Dinosaurs invade a suburban Nashville neighborhood.

A reclusive Memphis neighborhood is home to decades worth of misunderstood Masonic folk art.

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

The first full-scale tunnel built in America is short but scenic.

An abandoned town is hidden in Great Smoky Mountains National Park.

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

More than five miles of underground passageways.

Home of an evil witch famous within southern folklore.

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.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

A deteriorating 1990s Girl Scout camp in a beautiful lush park on Lake Ontario.

This mining town boomed in the Atomic Age when uranium was gold, only to be abandoned when the industry collapsed.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

The ruins of the suspension bridge hang over Kingsbury Run as a ghost of racial prejudice.

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

This forgotten building was one of the few Philadelphia-area breweries to survive Prohibition.

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

An abandoned, decaying sculpture garden built by an eccentric physician in the 1920s now looks more like a forgotten cemetery.

An unrealized Taoist palace left abandoned in a Houston suburb.