A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

One of the only places where Earth’s mantle lies above water.

Eat your Big Mac in a DC-3.

For decades, a bottle factory dumped their waste into these waters—now it's considered the best sea glass beach in England.

A giant Troll lurks under one of Seattle's oldest bridges.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

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

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

It took more than 300 years to build this church, which is home to two sacred vessels believed to hold the blood of Christ.

The medieval legend behind this holy well was one of the inspirations behind "Alice's Adventures in Wonderland."

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

A discarded movie prop that was the original monolith for "2001: A Space Odyssey."

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

One of the notorious Soviet leader Joseph Stalin's many summer retreats.

A failed infrastructure project now owns this unique moniker.

A breathtaking viewing platform over the Alps.

What remains of the summer palace of King Kamehameha III.

A sacred Ojibwe site covered in pictographs next to Lake Superior.

This museum explores the history of stickers and is home to RePEELed, an exhibit featuring sticker art from around the world.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

One of Mother Nature’s geological gems, home to many prehistoric fossils.