A defensive structure built during the Hundred Years War has remained useful in one way or another for nearly 700 years.

Martha's Vineyard's most beloved speakeasy sells late-night pastries.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

An abandoned faux-pub made famous by a Guinness commercial.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

A living memorial to the trees London lost during the Great Storm of 1987.

Arthur, Merlin, and Guinevere are among the largest and oldest satellite dishes on the planet.

This aging storage facility is the world's largest brick warehouse.

A chaotic collection of coin-operated slot machines designed to delight and disturb in equal measure.

The only monument to name all of the passengers and crew who died on the RMS Titanic.

The medieval woodcut-style artwork chronicles life in medieval London.

Led Zeppelin wrote some of their most iconic songs at this little 18th-century Welsh cottage.

This massive chalk hill carving is one of England's most beloved giant horse geoglyphs.

Another entry into the world of Edinburgh's pop-up artworks.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

A magnificent menagerie of oddities, including taxidermy cryptids.

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

It's a mystery why these remains were found with no traces of their bodies in sight.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

A mysterious crater-like pond has a spooky tendency to empty and fill with complete disregard to rainfall patterns.