At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

The highest bridge in America was built for an almost unnervingly small amount of money.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

San Francisco's newly reopened hands-on science museum.

A small oasis not far from downtown Moab.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

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

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

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

Shoreline strewn with the remains of ghostly fallen trees.

A wall of chewing gum moonlights as collective art.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

Stroll through a wonderland of stupendous moss-covered trees.

An institution that preserves the history of institutionalization.

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

Four ionic columns from the Treasury Department building ended up in a park in Nebraska.

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

America's largest man-made forest was planted in an effort to bring back the past.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

This erect, phallic geological spire wasn't always named so domestically.

An experimental, automotive replica of Stonehenge.

Commonly referred to as the most photographed Victorian home in the United States.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.