The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

It was once nicknamed "the most bombed hotel in Europe."

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

A museum marks and documents the site of the Titanic's launch.

2300-year-old Roman road connecting the empire.

The sign at the garden gate reads: "These Plants Can Kill."

The sculptural remains of the last home of a legendary Dada artist.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

A sweet symbol marks the place where torturous executions were once carried out.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

A six-ton wedding present for the King of the Scots.

Eighty million natural history specimens call this gargantuan museum home.

A lone pole once used to display a man's corpse now stands empty, but the memory remains.

The celebrated eyesore created by starry-eyed sweethearts.

France's most famous cemetery, with some of its most curious tombs.

One of the shortest streets in York has an especially odd name.

WWII artifacts, including the building itself.

This beautiful example of Victorian engineering is the oldest water-balanced funicular anywhere in the world.

Huge winged monument in the United Kingdom.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.