One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

A mysterious castle built as a monument to lost love.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

Formerly abandoned underground complex to keep royals safe from a nuclear war that never came.

A 200-year-old collection of oddities and medical paraphernalia.

One of Scotland's most important modern structures, it just made the '100 Most Endangered Sites' list.

These fantastically named natural pools look like something out of a Scottish myth.

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

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Moorish signal station on a stratgic rocky outcrop.

A Spanish town built into the cliffs.

Resonant stone, that has been played since prehistoric times.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

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

A whimsical bridge adorned with decorative dragons.

This one-time health resort was used by aristocrats around the world.

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

The Bristol Camera Obscura housed in an ancient windmill.

Where's a guy to go after a long, hard day at work?

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

The most loyal of little dogs, or a Victorian era publicity stunt?