This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

A floating cat sanctuary on an Amsterdam canal.

Cat art as far as the eye can see.

Museum preserving torture methods from the past.

The world's only museum devoted to the wonders of fluorescence.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

Banksy gives themself artistic license with this piece of London street art.

The world's only managed flock of mute swans was established as a factory for monk meat but is now an adorable sanctuary.

When the public was consulted about a new piece of street art, they naturally asked for an enormous metal dragon.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

The site of one of the largest non-nuclear explosions in history, created when a massive bomb dump accidentally exploded.

A unique tribute to the millions of animals who served and died for the British military.

One English town's celebratory landmark spurred more trouble than anticipated.

The site of the most dived wreck in the UK.

This WWII aircraft museum presents its wrecks like taxidermy, complete with recreations of the crash sites.

A boutique perfumery fashioned to look like a Victorian-era shop.

Sidney Scurvy, the interactive computer sailor, takes you on a journey to discover the everyday lives of Cook and his men.

Constructed from recycled wrought iron railroad tracks, it's been described as the most beautiful seaside pier in England.

A building that survived WWII, possibly on the virtue of its name alone.

Half-drowned wooden stumps and stone blocks are all that remain of a Victorian landing that was destroyed by storms.

A bronze tribute to the wildly popular video game from the '90s.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.