Ancient pueblos built into the base of a natural canyon wall.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

A motel dedicated to Southwestern nostalgia.

See massive fossils that are over 200 million years old in northeastern Arizona.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The first partially complete dinosaur skeleton was discovered here, forever changing the world's view of the ruling reptiles.

A completely round house designed for the Atomic Age.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

This Great Depression-era creation was once known as the strangest house in the world.

Step inside Lucy, the world's largest "elephant."

Memorial built in 1922 in remembrance of WWI casualties.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

A giant Troll lurks under one of Seattle's oldest bridges.

This former coal gasification plant found a curious second life as a popular public park.

A sliver of nostalgia in Seattle's Viretta Park.

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

A museum dedicated to the history and exploration of both popular music and science fiction.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

A wall of chewing gum moonlights as collective art.

An old-timey peepshow allows visitors to gawk at some of the world's most freakishly large footwear.