The ghost town that ended up on Ebay.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

A bizarre roadside attraction and the first instance of miniature golf in the world.

The only rotating bar in New Orleans has been slowly spinning since 1949.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

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

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

The world's longest known cave system.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A beautiful geyser under environmental threat.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

The first declared National Monument in the United States.

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

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Elevated freight railway turned wildly successful urban park.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.