This labyrinthine resting place of Black American leaders has been reclaimed by nature.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

Lines from a walking song are etched into a rock in Natural Bridge State Park.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

These early tent-shaped grave coverings are unique to Appalachia.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Swiss vineyards in a UNESCO heritage site.

For centuries no one knew there were hundreds of bones and precious artwork hidden beneath this Swiss church.

Traversing steep Alpine slopes, this engineering marvel is one of the longest and highest funiculars in the world.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

These spooky and unusual stone formations create an underworldly landscape.

This lovely little bridge hidden in a Switzerland gorge is essentially a fairytale.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

Artfully arranged bones of 5,800 Austrians.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

One of Canada's tiniest museums tackles the world's largest turtle.

This tiny abode has been covered in the art of the little old lady who made her life and living there.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

This everlasting lightning storm may be the world's largest generator of ozone.