A spiral staircase twists to the top of this unusual Czech lookout tower.

Before serving as James Bond's Casino Royale, this Victorian-era spa catered to the world's elite.

This ruined castle perched atop a rocky peak is a great place for a hike.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

The great Danube river starts here.

Wander among free-roaming storks at the sanctuary that helped save them from local extinction.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

Enter the cabin of a life-sized Hindenburg replica.

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

A swath of France so devastated by war it is still forbidden to go there.

Hundreds of dwarf beeches create an unusual, haunting forest in the north of France.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

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

Located in the house where Gustave Flaubert was born, this odd museum has more to do with medical grotesquery than the Western novel.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

One of the oldest and largest wooden churches in France was very evidently constructed by shipbuilders.

The birthplace of the ferocious William the Conqueror, this castle is awash in medieval history.

A luxurious doomsday bunker hidden beneath an unassuming Las Vegas home offers the best of subterranean suburbia.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

It's good luck to be mocked by this monkey.

This statue has a painful history, but activists have since recontextualized it as a way to educate visitors about the dangers posed by fascist regimes.

Built to test magnetically levitated elevators, the tower also boasts Germany's highest visitor platform.