The largest stone moai on Rapa Nui.

Cave on extinct volcano, once home to famous mathematician Pythagoras.

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

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

360° views of the city plus five floors of optical illusions and hands-on science.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

The longest hedge maze in the world.

Over 3km of caverns and caves at the Switzerland-France border contain the largest underground river in Central Europe.

Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

Virgil's many-mouthed gateway to the underworld.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

Cretean quarry suggests real-life site for ancient Greek myth of the man-eating Minotaur in his labyrinth.

One of the largest caves in the world open to the public.

A miniature train-ride through Slovenia's largest cave system.

This everlasting lightning storm may be the world's largest generator of ozone.

A town church once nearly submerged by the damming of a river is now hauntingly visible as the water recedes.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

The bizarre rocks of Đavolja Varoš are the result of natural erosion.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.