A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

An Egyptian-revival style film house in Boise, Idaho.

Some 46,000 years ago, a volcanic eruption led to a flooding event that carved this short canyon with steep vertical walls.

Idaho’s largest, deepest limestone cave is known for its quirky rock formations and bat population.

A mining camp built around an unexpected occurrence of silver.

The fifth-longest natural arch in the world, and the longest outside China.

A replica of the first public theater built in California.

Here, at the “world’s longest art gallery,” you’ll find forty miles of ancient petroglyphs and pictographs.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This museum’s collection includes rescued birds, fine art, and a collection of shrunken heads.

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

A unique opportunity to stay the night in retrofitted sections of sewer pipe.

A mother’s sweet tradition lives on with this unique memorial.

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.

The magic's in the hole!

The hallowed remains of a 900-year old Ancestral Pueblo great house.

One of the American Southwest's most extensive collections of Navajo rock art.

Legends surround this jagged rock formation in the New Mexico desert.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Senators used to relax in the nearly forgotten marble tubs now hidden in the U.S. Capitol Building's basement.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The airport was once a Civil War battleground, and the earthwork defenses can still be seen today.

The poems Nathaniel Hawthorne and his wife Sophia etched into its windows are still visible today.