Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

Made famous by "Star Wars," these troglodyte homes face an uncertain future.

Founded in 670, this ancient mosque is an architectural time portal.

Morocco's Argania trees are infested with nut-hungry goats.

A spooky juxtaposition of caves and graves gives this legend-filled cemetery a particularly haunting vibe.

The patches of trees pay tribute to Queen Elizabeth II.

The world's first military tank was designed in this English city amid the stalemate of WWI trench warfare.

The English town of Mansfield likely got its name from this enigmatic breast-shaped mound rising abruptly from the earth.

This striking observation tower shaped like a spinnaker sail is the newest icon in historic Portsmouth.

This English medieval castle is where King John died of dysentery.

The last working windmill in the U.K. that has eight sails.

The tower was originally used as a chimney for the waste incinerator of St. John's Precinct and Market.

These abandoned coal mine towers near Sherwood Forest might soon boast the U.K.’s longest zip-line.

A magnificent mansion hides a delightful collection of historic timepieces.

A striking 500-year-old mansion provides an unexpectedly sublime home for live deer and a menagerie of exotic stuffed animals.

These bleak 800-year-old ruins were once the royal residence of choice for hunting in Sherwood Forest.

A medieval relic whose great hall once hosted Mayflower pilgrims, one of Henry VIII’s ill-fated wives, and plenty of royal intrigue.

This poignant WWI memorial looks like a lighthouse 100 miles from the sea.

In 1396, two Scottish clans that had been violently feuding for centuries finally faced off in a bloody battle in this park.

Centuries of human activity have forged an eerie landscape of ruins and craters on an exposed and windswept hilltop.

A collection of early 19th century trams set in a reconstructed period village.

This Victorian marvel of engineering and artistic prowess is nicknamed the "Cathedral of Steam."

The site of the most dived wreck in the UK.

The near loss of the stately fireplaces at this medieval castle spawned some of Britain's most crucial historic preservation laws.