Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.

Its collection includes a broad array of social, geographic, graphic design, and political history.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Hundreds of enormous icebergs drift through this waterway every year.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

This poignant art installation raises awareness of violence against women.

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

Pop culture has helped to keep this iconic British building from being destroyed.

All unmarked mute swans on the Thames are owned by the Queen per a tradition that began in the 12th century.

A replica of the steam engine that hauled Queen Victoria's Royal Train is on display at Windsor.

This preserved puppy was an adorable beacon of charity.

This 11th century tower is said to be the oldest building in Oxford.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

One of Europe's oldest libraries.

The fantastic charm of England's oldest botanical garden has made it a place of writerly inspiration for centuries.