The only structure left with direct ties to the Salem witchcraft trials of 1692.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

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

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

The atmospheric road was never meant to be so creepy.

A castle in the Scottish Highlands has been continuously inhabited since the 1300s.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

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

This enchanting Victorian estate was home to the world's first hydroelectric power generator.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

This giant wooden treehouse within a sprawling garden has its own eatery.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

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

This Scottish manor house is a lush relic from the life of a literary great.

This eclectic sanctuary is a hodgepodge of various architectural styles, all crammed into one building.

This modern labyrinth lies in the shadow of a ruined medieval castle.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.