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

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

The narrowest house in America is seven feet of pure spite.

When an ancient supervolcano erupted, some of Nebraska's prehistoric animals were forever preserved in ash.

A rancher expanding a natural spring for his cattle came up with bones – lots and lots of them.

Opulent downtown movie theater now houses cars as an indoor parking garage.

This wooded grove of beautiful hand-built stone grottos is a hidden gem within a shuttered Franciscan monastery.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

This replica small town lets visitors take a stroll through the story of progress in the U.S. via thousands of Americana artifacts.

This deceivingly ordinary warehouse hides an enormous collection of pop culture treasures.

The subtle science of a master molecular gastronomist.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

The birthplace of the Ford Model T is now a museum full of antique cars.

The largest drain hole in the world.

Towering basalt columns, a creation of fire and ice.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Five candy-colored villages on the Italian Riviera.

The first declared National Monument in the United States.