Most-visited and most-photographed slot canyon in the American Southwest.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Come for the speed, leave in love with the desert.

An obscure waterfall that looks like something out of a fantasy novel.

The highest point in Washington state is a volcano covered in glaciers.

The largest wooden building in the world now houses a fascinating collection of aircraft.

Home of Howard Hughes' Spruce Goose.

An extraordinary mixture of natural beauty and man-made phenomena.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

A 6-mile-long lake created by an apocalyptic seismic event and the deadly chain reaction that ensued.

This amazingly preserved Gold Rush town is a historian's dream.

An entire town preserved as a historic landmark.

Home to the deepest rift anywhere on Earth.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

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

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

A field of nothing but boulders which resembles a giant's gravel driveway.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

Oldest existing wire suspension bridge in the United States.

A toxic ghost town sitting atop a massive coal fire.