A modern-day Lascaux cave underneath Paris.

Ancient site of Mongolian Shamanism located near a road leading out of Ulaanbaatar.

An exhibition devoted to the life (and posthumous taxidermy form) of the last known representative of the Pinta Island Tortoises.

An art installation that will challenge your understanding of reality and perception.

A literally moving statue of stacked metal giants just continually trying (and failing) to find love.

The spectacular and eerie moss-covered grave site of 19th-century Belgian merchant.

A contemporary art installation housed within a Gothic cathedral.

Hidden in the woods behind this English estate lies a Victorian pet cemetery.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

A deserted medieval village where bodies were once mutilated to prevent them rising from the dead.

Cycle the solar system—from the sun to Pluto—right here on earth.

Semaphore saints, a golden dragon's head, and a stone carved with religious warnings all call this cathedral home.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

A century-old tradition has culminated in a small but singular collection of feline effigies.

This network of narrow, medieval passages has the most delightful name.

This popular square's history as the former site of a church is right beneath your feet.

Makers and sellers of the original and finest York Ghosts.

The final resting place of England's most notorious bandit.

19th century tunnels burrowed under Liverpool.

This humble bench is considered the most beautiful in the world.

The largest prehistoric cemetery on the Balearic Islands dates back over 2,500 years.

This "flat geyser" bubbles up out of the ground periodically like a disappearing river.

How did an Australian statue of the Bard of Avon end up in the Hungarian capital?

In between two buildings in Ljubljana, medieval tunnel to nowhere.