The UK's oldest theme park slowly slips away.

Catacombs turned marketplace.

Famously misunderstood wonder of the ancient world

Eyam took steps to quarantine themselves and keep the plague from spreading.

An 18-meter-long sarcophagus of a constantly growing dead prophet.

Touching displays of wishes for peace from the Cold War era.

Abandoned limestone cave was once a sacred place of worship.

An underground city of salt.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

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

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Go inside to really appreciate this 500-year-old technological masterpiece.

A bronze statue dating back as far as 1252, still has remnants of gold on its right cheek from ancient gilding.

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

This psychedelic tourist trap is a leisurely descent into madness.

The first island in the world designated a light-pollution-free astronomical observation point.

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

A whimsical bridge adorned with decorative dragons.

This attraction was abandoned after the Chornobyl disaster.

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

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

The Origin of On the Origin of Species.

Small Island off the coast of Greenland.

A deadly ancient portal to the underworld.