The all-but-forgotten cemetery is Eastern Loudon County's largest African-American burial ground.

This pun was simply waiting to come to life, and one defense contractor made it so.

See four top-secret US spy aircraft of the Cold War era, including the legendary SR-71 Blackbird and the A-12 Oxcart.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

A beautiful geyser under environmental threat.

Experience the glam side of air travel without leaving the ground at this speakeasy.

Unique tower has outlasted a takeover of the company.

Three courses accompanied by Christian rock.

This lovely tree was a thank you gift from the man known as "Public Enemy No.1."

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

This leafy estate is worth $18 million and is so grand it has two mailing addresses.

View rare birds and interact with lemurs at this nonprofit run entirely by volunteers.

This public park was the site of the largest civilian disaster of the Civil War.

A perilous medieval road leading right into the sea.

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.

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

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

The quarry was abandoned over 100 years ago, after a massive ammunition explosion ended in tragedy.

An abandoned stretch of highway, deteriorating next to the operational one.

The only diamond mine in the world where you can keep what you find.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

One of the only places where Earth’s mantle lies above water.

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

The home of pigs, snakes, chameleons, and the alleged largest bunny in the United States.