Thousands of mounted insects, and some live ones, hide within an otherwise ordinary shopping mall.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Oliver Cromwell once seized the land under this house, which included the ruins of a medieval abbey that the owner used to build his stately home.

A standing relief of a Norman knight whose posture marks him as a Crusader.

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

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

An important pilgrimage site for pagans and early Christians, named for a Celtic goddess-turned-saint.

Just another ancient, mysterious Irish stone circle.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

A stunning Victorian abbey and walled garden on a lakefront.

The world's tallest box hedge is found in a delightful garden.

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

Though they've since been renamed, these two streets hint at Dublin's darker days.

This 30-foot pile of rocks may be the grave of a mythological Irish queen.

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

This controversial Irish show cave is home to a massive formation known as the Great Stalactite.

After being destroyed by IRA sympathizers, the ruins of this stately Irish manor have sat vacant for decades.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

A corkscrew-shaped barn in Ireland.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

An ancient neolithic tomb that only sees the sun twice a year.

A sacred well steeped in Pagan roots on the West Coast of Ireland.

Obelisks and stone pineapples in the Irish countryside.