A 15th-century whalebone is tucked away in an unassuming corner of this medieval church.

The wild west is still alive and well at this authentic mining town watering hole.

This maintained cabin is where Josie Morris, an occasional associate of Butch Cassidy, lived out the last 50 years of her life by herself.

This large pile of traveler-curated rocks by the dry lakebed is a longstanding tradition on the Old Mojave Road.

A former utopian healing center created by a huckster and built by derelicts.

This giant temperature attraction created some giant electric bills.

A pair of large white marble lions guard this stretch of the Mojave Desert, and it is utterly mysterious how they got there.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

The site of a fallen tree that protected Americans from British forces during the American Revolution.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

One of the remaining markers of an era when Brooklyn and Flatbush were separate cities.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

Bioluminescent firefly squid light up this Japanese fishing port.

A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A glowing underwater cliff attracts marine life and divers in equal measure.

San Francisco’s century-old Christmas Tree.

A famous alternative culture epicenter and where Joplin serenaded young hippies.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

Take a trip back in time at this retro cinema dating back to 1954.

Where you can hail your favorite fictional commanders-in-chief.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.