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

This is Britain's one and only clock concealed in the pavement.

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

One of the oldest trees in Britain may have been witness to some of the country's formative moments.

The intended purpose of this unfinished Elizabethan building remains a mystery.

Exquisite carvings of leaves, Green Men, and the occasional dragon adorn a medieval chapter house.

A 13th-century inn where the ill-fated King Charles I spent his last night of freedom.

This sculpture encompasses the emotion of rail travel.

Where condemned pirates met their grisly end at the gallows on the River Thames.

This hydraulic power system in London was, at one time, seen as a rival to electricity and the last of its kind to shut down.

The arching stretch of London's longest street holds many reminders of the area's maritime past.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

According to legend, this is the site where a blind horse killed a local witch.

One of the oldest libraries in England, and one of the last of the great medieval chained collections.

A locomotive that was captured as a prisoner of war is now recognized as a WWII memorial.

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

An intriguing three-sided folly is a testament to one man's devotion to Catholicism and the number three.

The longest and steepest staircase locks in the United Kingdom.

In this quiet English suburb, giant steel hands and feet dot the landscape.

This medieval castle is filled with an eccentric collection that ranges from ancient Egyptian artifacts to taxidermy to a mummified hand that was cut off during a duel.

A magnificent Victorian garden that brings the charm and style of old-time aristocracy to the 21st century public.

One of the oldest bridges in Norwich was used during the English witch trials and is said to be haunted.

This imprint of an old computer keyboard has a unique backstory.