The final resting place of soldiers' loyal canine companions.

The world's oldest model village.

The remnants of this unusual bridge await an uncertain fate.

This trio of neolithic stone monuments are fabled to be a king and his knights that were petrified by a witch.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

A hugely vast Irish landscape of barren rock that stretches for miles.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

A moody and picturesque riverside ruin overgrown with vegetation.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

The ancient tomb acts as a calendar that keeps perfect time.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The modern birthplace of Irish freedom.

The world’s only museum dedicated to baked beans.

This neolithic stone grave has been altered and restored so often its now more neo than lithic.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

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

The castle still holds traces of the abandoned Roman fort it was built atop.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

Recently restored menagerie of Victorian-era beasts.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.