This abandoned gun tower was built to defend the River Thames from a French naval attack.

The castle still holds traces of the abandoned Roman fort it was built atop.

In an isolated field near a dilapidated barn stands this chilling portrayal of the plight of the Nuba peoples of Sudan.

For over 500 years this timbered alms house has provided a home for elderly residents of Coventry.

The worst flood disaster in Welsh history might have been a lot worse if it had not happened on movie night.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

Peek inside restored planes at this off-the-beaten-path collection of aviation archaeology.

The red letters in the literary pavement leading to the library form a mysterious code.

The fake World Cup prize was secretly created after the first one was stolen in 1966.

Scotland's only funicular railway is also the United Kingdom's highest.

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

This overlooked street light once served as a KGB dead letter box.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

A memorial to the British politician who spearheaded the National Health Service.

England's largest white horse isn't even white.

Built in the 1300s, this magnificent building that hosted England's kings and queens transports you to the Middle Ages.

Banksy's image of a naked man dangling from the window of a sex health clinic.

An abandoned tower once used to study the cosmos hides within a thicket of greenery.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

Quirky outsider art transforms this garden shop into a little stone fantasyland.

Be on the lookout for the symbolic insect all over the city.

The only medieval bridge in Britain with its defensive tower still in tact.

Once-buried markers show England’s lowest land point keeps getting lower.