A fiery crater has been burning in the Karakum Desert since 1971.

At the base of Steens Mountain resides an otherworldly desert.

Mine your own precious stones.

The only Native American museum along the Oregon Trail, run by the peoples who have lived on the land for generations.

The trunks of 3,000 year-old trees lurk beneath the surface of this crystal clear lake in Oregon.

Unknown to many, this sparkling turquoise lake hides amid Oregon's snowcapped mountains.

A volcanic landmark located on an Ice age lake bed.

This perfectly preserved Chinese medicine shop was untouched for decades before being reopened as a museum.

A volcanic fissure over two miles long and up to 70 feet deep.

Formerly secret, precariously perched boulders.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

The longest continuous lava tube in Oregon.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Shakespeare has been brought to life in this open air theater for the better part of a century.

An American city stranded at the tip of a Canadian peninsula where strict adherence to the "49th parallel rule" became problematic.

This cabin from the 1850s is one of the first structures built by Chinese immigrants in California.

The oldest tofu shop in the United States is a firm favorite with locals.

World's only nuclear reactor operated by liberal arts undergraduates.

The tiny statues form China's only known terracotta army from the Han dynasty.

The world's first hotel built in an abandoned water-filled quarry.

A total of 999 stairs lead visitors through a massive hole in a mountain known as the Gateway to Heaven.

This speakeasy continues the Prohibition-era legacy of Harlem's jazzy Swing Street.