This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

Limestone caves with spectacular showcase chambers.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

An off-the-beaten path cave with an underground lake.

This Old West prison built into the side of a cliff was said to be inescapable.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

The ruins of this former mining boomtown once housed over 3,000 people. Now, the population is two.

A roadside attraction filled with an astounding array of gloriously wacky vehicles.

The largest self-built castle in the U.S., six decades in the making.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

Greenery cloaks this serene sculpture inspired by the famous Lost Gardens of Heligan.

One of the last remaining venues on the Old Chitlin’ Circuit is a kaleidoscopic music hall at the end of a dirt road.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

From sax to spuds, get 'em all at this landmark music establishment.

This star-studded Old Hollywood restaurant is where fettuccine Alfredo made its United States debut.

Historic funicular railway, believed to be the shortest railroad in the world.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

A prohibition-style speakeasy takes up residence in the last Victorian residence in Hollywood.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.