The remains of one of the last mining camps developed on the New River.

Odd outsider art installations surround a Gold Rush-era ghost town.

One of the few surviving examples of the first lock and dam system built on the Ohio River.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

Watch the seas clash at the place where according to Maori tradition, the spirits depart for their journey to the afterlife.

Unknown to many, this sparkling turquoise lake hides amid Oregon's snowcapped mountains.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Rare recess caves fill this unbelievably beautiful Ohio park.

A series of labyrinths in the Nevada desert inspire meditation and calmness.

Spend the night in this formerly abandoned traditional Scottish village.

A holy well supposedly infused with a saint's spirit flows within this quaint chapel.

On Japan's Tashirojima Island, cats are king.

This mysterious, medieval cathedral remains unbuilt but fiercely protected.

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

An original apothecary from 1792.

Once forgotten and built over, this historic Black cemetery now houses a poignant memorial.

Remains of a historic fountain that was mysteriously lost in the demolition of a D.C. traffic circle.

Historic home of America's sweetheart sharpshooter, Annie Oakley.

This 1830s store is believed to be the site of Harriet Tubman's first stand.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.