The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.

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

Surreal riveted sea forts once protected the Kent shores from German attack.

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

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

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

Tubing through a cave lit with glowworms is a magical underground experience.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

This massive library holds what was once the largest book collection in the world.

An ethereal glowing blue ocean cave in Croatia.

The beautiful baroque library of the Hapsburg empire.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A museum of carnival attractions where you are invited to ride the rides.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

Museum preserving torture methods from the past.

The abandoned Japanese amusement park once loomed as a dystopian Disneyland.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

France's most famous cemetery, with some of its most curious tombs.

Two stunning 17th-century libraries and a cabinet of curiosities.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.