These fantastically named natural pools look like something out of a Scottish myth.

A modern English garden of eccentric beasts, follies, and oddities.

These azure waters were thought to lead to the Mayan Underworld.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

An ancient artistic garden parlor full of hidden water wonders.

Pilgrimage site for star-crossed lovers.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

Natural cathedral designed by Italian artist Giuliano Mauri.

An eccentric artist's abode in this small Italian town has been transformed into a surreal temple of mosaic madness.

The highest waterfall in Italy is only "turned on" five times a year.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

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

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

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

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

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

A remarkably intact castle that once was the largest in Ireland.