Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

One of the famous Czech artist's lesser-known Prague installations appears to be a glowing fetus affixed to a drainpipe.

This doorless 20th-century elevator doesn't stop or slow down.

Countless grotesque faces stare out from this eerie Prague art wall.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

A 30-acre garden inspired by the principles of modern physics.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

The patches of trees pay tribute to Queen Elizabeth II.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

A sweet symbol marks the place where torturous executions were once carried out.

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

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.