The mystery of this small, brick pond eluded its possibly only investigator until his death.

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

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.

Macbeth's infamous "Great Birnam Wood."

The oldest library in Scotland was built from the remains of a church to hold a churchman's library.

Possibly the oldest living thing in Europe, more likely a pagan survivor.

A hidden tunnel leads to a medieval queen's shrine buried beneath a parking lot.

A lake with hundreds of ancient skeletons surrounding it. The surprise is what killed them.

An abandoned Cold War missile radar site.

The short-lived railroad town in central Oregon has been abandoned since the 1930s.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

Woven tree art gives this towering Australian woodland a touch of mystical whimsy.

The spot where the namesake of the Douglas fir met his mysterious end on a Hawaiian volcano.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

A once-glowing grotto at the bottom of Waikapalae Wet Cave.

Legend says the water within these mysterious sacred springs stays cold even when boiled.

This enchanting 600-year-old tree is so magical it inspired the beloved tale of Pinocchio.

There's something big lurking beneath the surface of this tiny Oregon park.

Staves, storm-calling, and of course, necropants.

The Icelandic Sea Monster Museum explores the area's history of aquatic cryptid sightings.

According to legend, you must remain completely silent while passing this man-made mound or suffer the consequences.

Incredible sculptures inspired by obscure passages from the Bible.