Venice's island of the dead.

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

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

Roman ruins top white travertine terraces formed by ancient hot springs.

The ancient latrines of the Greeks, in all their public glory.

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

A sturdy relic of Britain's once crucial gunpowder industry is now a haunting Cornish ruin.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

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

The world's largest collection of ships in bottles.

A ruined castle has more than its fair share of legends and ghost stories.

Pop culture has helped to keep this iconic British building from being destroyed.

Historic medieval fortified city in southwest France.

2300-year-old Roman road connecting the empire.

A six-ton wedding present for the King of the Scots.

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

The final resting place of soldiers' loyal canine companions.

Famously misunderstood wonder of the ancient world

A fantastic castle rumored to be the birthplace of King Arthur.

A little sculpture with a large wardrobe.

Climb inside an iron crystal magnified 165 billion times its normal size.

Hiding the longest subterranean river known in the world.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.