The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

A 2,000-ton rock resting in a state of a delicate balance.

An impressive Neolithic henge with banks nearly 10 feet high.

Though this large circular site is now named for the legendary king, its history dates back to the Neolithic era.

Legends say this red sandstone monolith and the dozens of smaller boulders that surround it were once a coven of witches—before a Scottish wizard turned them all to stone.

A series of idealized caves carved to entertain guests.

This volcanic plug boasts the longest recorded history of any Scottish stronghold.

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

A long-abandoned relic of World War II.

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

This eclectic sanctuary is a hodgepodge of various architectural styles, all crammed into one building.

Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

The location of the Bridge of Death and the Gorge of Eternal Peril in "Monty Python and the Holy Grail."

These ruins witnessed the final gathering of the failed Jacobite Rebellion.

This site contains overlapping ancient graveyards that existed about 1,000 years apart.

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

A castle in the Scottish Highlands has been continuously inhabited since the 1300s.

A collection of short standing stones covers this hillside.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

The most northern place on the mainland of Great Britain.

This ruined travelers shelter sits abandoned in a desolate bog of Flow Country.

A sea cave with a waterfall and Viking past

This fortified L-shaped tower is the ancient seat of clan Hannay.

This 900-foot structure with 20 arches crossing a Scottish river was built in the late 19th century.