A book bound in the skin of an infamous criminal, along with countless other specimens.

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

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

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

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

Poetic, metallic giraffes adorn a square off an Edinburgh thoroughfare.

The world’s first museum dedicated to the history of childhood opened in Edinburgh in 1955.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

A giant sculpture of the legendary "Salmon of Knowledge" celebrates the return of fish to Belfast's River Lagan.

Experience what life was like in Ireland during the Viking and medieval ages.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

Copenhagen's celebrated theme park and gardens.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

An exotic wildlife habitat right off The Strip.