Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

This large midwestern cavern features impressive rock formations and an underground waterfall.

A luxuriant botanical garden below sea level.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

A stark reminder of the huge nuclear weapons plant that once stood on the site and its effect on the surrounding area.

The painted and decorated towers of this Hindu shrine were once the tallest structures in one of the oldest cities in India.

Hundreds of hopeful gold miners came here to get rich, but only two years later the small town was deserted.

This locally-famous crevasse in New York State is icy all year round.

One man is on a singular quest to name an island after a famous hip-hop artist.

A spooky and decrepit mental health facility is slowly being replaced with newer digs.

This railroad tunnel was once the longest in Massachusetts.

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

The pleasant woodland cemetery that has inspired more than its fair share of wild legends.

The ghost town that was one of New Hampshire's first settlements now exists as a park detailing its history.

This unassuming Massachusetts residence was built with a trap door to hide escapees on the Underground Railroad.

Around 100 sculptures from artists all over the world decorate the hiking trails surrounding this locale.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

In order to save this beloved rock, locals blew it up and put it back together piece by piece.

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

Resonating tubes make music from highway overpass.

Burial ground for revolutionary veterans attracts tall tales, ghost hunters, not enough historians and preservationists.

The largest body of water in Massachusetts annihilated four small towns just to slake Boston's thirst.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

Mass Grave of 48 colonists killed in a raid by Native Americans and the French in 1704.