A strange house built only at night, with rumored mystic inspiration.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

The beautiful baroque library of the Hapsburg empire.

This abandoned amusement park was built on a site with a dark history.

A rare view of a preserved Victorian science museum.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Famously misunderstood wonder of the ancient world

Where America's first doomsday cult awaited the end of the world.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

A hand-built folk art installation covered with messages of God's love.

Home of an evil witch famous within southern folklore.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

The world's largest collection of witchcraft regalia.

A beautiful Victorian-era cemetery, complete with a miniature village.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.