This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

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

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

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

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

A close look reveals that the Scottish monument is just slightly off-kilter.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

A remarkable feat of Victorian engineering across the Firth of Forth.

This enormous censer uses a pulley system installed over 400 years ago.

A 12th century church completely covered in shells.

The oldest Roman lighthouse still in use.

This enchanting natural park is a magical example of a temperate rainforest in Europe.

This humble bench is considered the most beautiful in the world.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

An Antoni Gaudí masterpiece in Astorga.

Devastated landscape used for hundreds of years by the Romans as their primary mining site.

This ship offers visitors the chance to spend the night aboard a former floating hospital for fishermen.

An icon of the city, this chapel features an amazing dome ceiling and offers panoramic views.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

This castle has links to Portugal’s founding and struggles for independence.

A hidden three-foot-wide house separates these two regal churches.