Look closely and you’ll notice that the color changes a third of the way up the tower.

This striking observation tower shaped like a spinnaker sail is the newest icon in historic Portsmouth.

The patch of land below the memorial was gifted by the British to the United States.

At just 51 feet and 10 inches long, it's the shortest street in England.

The medieval woodcut-style artwork chronicles life in medieval London.

A mysterious carving from 17th-century London seemingly depicts a young boy sitting on a bread basket.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

The sculpture of the deceased cockatoo flops atop its personal plinth.

Buried for centuries, this hidden cellar is all that remains of London's medieval Whitefriars Monastery.

A tribute to the intrepid explorer and his crew who perished in terrible conditions on an ill-fated expedition to the Arctic.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

These ornate arches show how the course of the River Thames has changed.

London's only public statue of the much-married monarch adorns the gate to St Bartholomew’s Hospital.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

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

The taxidermied remains of a once-great parrot.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

This luxury shopping lane has been protected by its own tiny police force for over a century.

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

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.