A historic covered bridge is but one example of an oddly prevalent American urban legend.

High in the clouds of San Marino sits an ancient tower with some curious prisoner graffiti.

The Nobel-Prize-winning author of The Stranger is buried beneath a simple gravestone in a sleepy French village.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

This museum showcases the history and contributions of the U.S. Army to the medical industry, both on the battlefield and off.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The "original web site," this farm in Northern Vermont encourages orb-weaver spiders to build their daily webs, and then sells the preserved masterpieces.

Malaysian fireflies create a dazzling display as thousands light up in unison.

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

These termites have an large and deadly abode—impressive by day, dazzling by night.

This picturesque round lake is said to be home to the legendary Mokèlé-mbèmbé.

Whether hero or rogue, his silver bullet is said to have taken down the murderous "Beast of Gevaudan."

Memorializing the bravery of one young woman facing the monster of her age.

Sculpture of a legendary French dragon.

A gigantic collection of teeny, tiny books.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Island, once a pirate hideout, now home to an abandoned resort.

The unique ecosystem atop an Australian mountain is home to some colorful inhabitants.

This dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

The world's second largest salt mine, said to have been discovered by Alexander the Great's horse.

Before he was America’s most famous preservationist, John Muir was an ingenious mechanical inventor.

Science fiction's grandfather has a fittingly marvelous tomb.