This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

One of the oldest suspension bridges in the world blends in perfectly with a medieval castle.

This castle tower in Wales leans at a steeper angle than the Leaning Tower of Pisa.

Neolithic burial chambers hidden beside a village school.

These precariously placed ruins harken back to a 13th-century castle.

Go deep down into the earth to experience the world of Welsh coal miners.

The remains of one of Wales’ great medieval buildings, with a pub in the cellar.

The remains of a small medieval chapel mark the legendary birthplace of the patron saint of Wales.

A tiny village in Wales claims the name of a noble medieval hound slain for a crime he didn't commit.

In 1977, an eccentric book lover formed a micronation for book lovers.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

The longest and tallest aqueduct in Britain can actually be sailed across.

Picturesque ruins once held off mighty armies.

After years of slow decline, a derelict Gothic castle is now being restored to life.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

A museum dedicated to Wales’ favorite—and strangest-looking—watercraft.

A medieval house adorned with enigmatic carvings, including one of a man displaying his masculine attributes.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

His "Lionheart" is entombed separately from the rest of his body.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.