These stark white cliffs were spat up by the sea and are slowly being retaken by it.

Charles Babbage's proto-computer, painstakingly brought to life.

England's most notorious suicide spot.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

London's smallest police station is barely the size of a phone booth.

Eighty million natural history specimens call this gargantuan museum home.

The longest hedge maze in the world.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The site of Austria's biggest concentration camp now honors its victims.

Legends surround an ancient tree trunk riddled with nails for good luck.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

The beautiful baroque library of the Hapsburg empire.

Four giant movable street lights decorate this modern Rotterdam square.

The largest 19th century panorama in the world still in-situ.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

Traversing steep Alpine slopes, this engineering marvel is one of the longest and highest funiculars in the world.

A historic observatory precariously perched at the "Top of Europe."

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.