In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

This humble hole-in-the-wall is home to an incredible pig ear sandwich and serious civil rights history.

Parts of the civil rights movement unfolded in this historic eatery, helmed by the "Queen of Creole Cuisine."

An antique store houses the last operational diner from the defunct department store chain.

Outposts of this restaurant chain were shaped like jaunty chapeaus.

This pebble beach is so beautiful that taking its rocks is against the law.

You can still find treasures on the pebbly beaches of one of the world's oldest jade-producing areas.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

This Australian beach is composed of tiny shells.

According to the locals, the sands of this secluded Norway beach are infused with gemstone particles.

Crushed coral and crystals give the sand its signature coloration.

Living fossils in this remote Australian bay provide a glimpse of what Earth may have looked like 3.5 billion years ago.

When waves crash onto this section of beach, the rocks sing a song.

"Not too many people can say they've had a nuclear bomb dropped on them, not too many would want to." — Walter Gregg.

The abandoned funicular tunnel was a secret base for the BBC during World War II.

The beehive-like buildings of this abandoned resort reside near the border of Mauritania and Senegal.

Napa's oldest building is now a Mexican restaurant.

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

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

This bridge is so steep it looks like a rollercoaster.

"Singing sands" and the world's largest hourglass reside near Japan's Kotogahama beach.

This former open-pit manganese mine is now a massive graffiti canvas.

This magnificent, quirky home sits atop a literal gold mine in the middle of the Nevada desert.