Britain's answer to the NSA is based out of this deliciously-named circular headquarters.

Local legends say that fairies used to dance in the moonlight here and invite handsome young men into their grottoes.

A 30-acre garden inspired by the principles of modern physics.

An unusual monument to a 19th-century circus star.

World's largest working waterwheel has been around for over 150 years.

More stones than Stonehenge, all scattered within a windswept landscape sure to enchant 'Outlander' fans.

A peace symbol in Northern Ireland is among the world's largest hedge mazes.

A brisk climb up this solitary peak leads to the origin story of a towering figure in Irish history.

Northern Ireland's church-turned-skate park.

The highest peak in Northern Ireland is topped with a stone tower and haunting burial mounds.

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

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

This picturesque lighthouse at the edge of the Irish Sea looks like a giant stone pencil.

Local legend says there's treasure hidden within its crowded graveyard.

This Bronze Age tomb makes the most unusual front garden fixture.