Chelsea's soldiers were given strict orders when crossing this historic bridge.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

This intricately carved and hilariously huge bed was such a famous symbol both Shakespeare and Byron used it in their writing.

Hidden in the courtyard of the Victoria and Albert Museum is a little-known tribute to two celebrity pooches.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

The bones of two medieval royal lions were discovered at the historic fortress.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The monster at the center of the Darwin Center Spirit Collection.

Repository for more than 22 million pickled specimens.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

According to legend, this tomb holds the secrets to time travel.

On the eve of a condemned prisoner's death, this bell rang 12 times outside their cell.

Public access to clean drinking water was an instant hit among the masses.

Murals of the wild parties once held on the frozen River Thames.

This may be the last of London's wooden pavements, which were once a common sight in the city.

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

A celebrated bandstand at the center of what was once the worst slum in London.

A wellspring of creativity in an already artsy East London neighborhood.

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

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.