The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

The stately remains of Llywelyn the Great's mighty fortress.

The unusual clock on this 18th-century market building has an extra minute hand for "Bristol time."

It houses a menagerie of wondrous taxidermy specimens from around the world, including the remains of a famous gorilla.

An authentic, seaworthy replica of the ship that sailed to Newfoundland in 1497.

Cathedral-like Victorian vaults are hidden within this iconic bridge.

This beautiful site is where the first transatlantic telegraph was sent from.

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

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

An unusual manor of stunning beauty, born out of a crippling disease.

An 1814 castle that hosts an exhibit of "explorabilia".

Wander among the abandoned ruins of this once-powerful medieval town.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

The ruins of a medieval monastery named after a type of tree.

This burial pyramid in central Ireland is thousands of miles and thousands of years away from its Egyptian inspiration.

A proud bronze billy stands as an eternal symbol of Ireland's oldest festival, where a goat is made king.

An ancient holy well said to be used by the patron saint of sailors and travelers, lost in the boggy west of Valentia Island.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

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

Quite possibly the oldest love poem known to humankind.

The ruins of a sixth-century monastery sit on the banks of the River Shannon.

This church houses the tomb—but not the remains—of St. Nicholas, the likely progenitor to Santa Claus.

This airport also offers travelers the chance to view thousands of years of Turkish history.

This ancient subterranean megalopolis is known for the hot oil traps that were installed above each of its entrances.