This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

Built in 1512, the oldest cathedral in the Americas.

This remote Scottish island has the only round church in the nation.

It's believed a castle existed at this site since the 12th century.

An unusually shaped lighthouse with origins rooted in heartbreak.

This 1,300-year-old marker is one of the finest and most complete early Christian crosses in Scotland.

This Neolithic-era complex boasts standing stones, a cairn, and the only henge in Western Scotland.

This collection of Neolithic monuments make up one of The U.K.'s richest archeological landscapes.

Where the sleeping monsters of Scotland's oil industry are left to rust.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

Largest lake in Great Britain measured by surface area.

Britain's only herd of free-ranging reindeer.

The heads of two giant mythological water horses honor Scotland's horselord past.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

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

Visit Europe's largest subterranean waterfall, carved by water from the glaciers of the towering peaks surrounding the valley.

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.

These ramparts, once lined with towers, were constructed in defense of Beaune.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.