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

A corkscrew-shaped barn in Ireland.

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

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

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

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

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

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

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

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

An eccentric collection of antique items shares space with a prop-quality witchcraft museum.

Rare karst landscape eroded from a flat seabed.

Mine shafts and hard pastries await visitors at this massive mountain of salt.

"Alleys of Stone" form natural mazes in Spanish natural park.

Numerous sculptures set along hiking trails symbolize and idealize the relationship between man and nature.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

A completely underwater art museum sends a stark message about humans' impact on the environment.

A darkly erotic open-air statuary in Catalonia.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

This beautifully verdant lagoon is tucked below a massive volcano in a crater atop a black pebble beach.

Bacteria and algae give the salty water its bubblegum hue.