The secret wartime bunker built on the platforms of an abandoned Tube station.

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

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

This early version of the guillotine was used to execute the man responsible for its construction.

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

Historic church where a number of Shakespeare's actors are buried.

A monolithic monument in Greater London.

Carved initials which are nearly 500 years old preserve the deposed Queen's presence at Hampton Court Palace.

Every birth, death, and marriage is recorded in these color-coded leather-bound books.

Small museum dedicated to the founder of electromagnetic theory.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

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

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

A plaque marks the underground site of one of London's "lost rivers."

It is against the law to obstruct the view from the top of this English burial mound.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

Ancient human remains unearthed around the iconic monument.

The grounds of this Jacobean estate contain one of the oldest mulberry trees in England.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

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

A rare wooden coffin set vertically into the Gothic arch of an ruined church.

This small museum in a 17th-century building honors three iconic Scottish writers.

Black cat statues guard this temple-like Egyptian revival factory.