Summer in Scotland begins with a spectacularly wild and colorful event rooted in ancient pagan traditions.

Large-scale contemporary artworks tower over fields and lurk in forests around a Jacobean manor house.

The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.

A pagan tradition of draping trees with rags eerily lives on.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

At high tide this strange footbridge appears to have no purpose whatsoever.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

This series of Scottish caves has no clear purpose other than baffling historians.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Spend the night in this formerly abandoned traditional Scottish village.

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

A 30-acre garden inspired by the principles of modern physics.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

Two thousand artifacts from around the world collected by one woman who loved to travel.

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

In this mine all the gold you can carry may not be as sweet of a deal as it sounds.

This set of mysterious petroglyphs in the Peruvian jungle could shed light on centuries-old activities in the region.

This metal tower in the desert provides views of a handful of Nazca geoglyphs.

This Peruvian bone silo lined with hanging human skeletons and hundreds of skulls is topped with a remarkable Michelangelo replica.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

Now containing the bones of the actual conquistador, instead of someone else.

These delicate ruins need more tourists to keep them from fading away.