A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

A 300-ship graveyard, with a few still visible at low tide.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

Microscopic fossils suggest Australia may be the birthplace of sulphur-based life forms.

The longest living non-clonal organisms on Earth.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

A 18th century graveyard and its astonishing cortege of macabre iconography.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

The world's largest collection of witchcraft regalia.

An abandoned castle owned and ignored by Masons carries a cursed history.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.