This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

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

This captivating Bronze Age timber circle spent centuries concealed by the tides.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

This trio of neolithic stone monuments are fabled to be a king and his knights that were petrified by a witch.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

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

A relic of Victorian grandeur hides beneath a busy South London road.

A remarkable medieval structure born from a 14th-century disaster.

The remains of Crystal Palace Great Exhibition of 1851.

Now isolated, this church was once the center of a bustling village that succumbed to the Black Death.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

This medieval church tower has maintained its clockworks since the 16th century.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

The history of this famed tree ranges from an 18th-century highway robber, to the Scout Association.

A student driver's nightmare.

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

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

To the famous surrealist artist, liberty required two torches held high.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

A 4,000-year-old burial site hides behind a roadside Burger King.