A commemorative plaque at the door pays tribute to an "American Patriot" known for his betrayal.

This underpass became an unlikely piece of cinematic history after its appearance in 'A Clockwork Orange.'

According to legend, this tomb holds the secrets to time travel.

Legend has it that seven Anglo-Saxon kings were coronated on this stone, located in the appropriately-named town of Kingston.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

Victorian-era Londoners really wanted to believe this 17th-century cistern was actually an ancient artifact.

This mysterious and unique painting is filled with symbolism.

It's a mystery why these remains were found with no traces of their bodies in sight.

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

One of the figures in this Celtic sculpture continues to puzzle archaeologists.

The collection contains over 25,000 items and details the painful dental practices of the past.

The plunge pool is a surviving relic of a rowdy royal residence.

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

This historic building displays the remains of a victim of the devastating 14th-century plague.

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

The sumptuous ceiling was one of the last things Charles I saw before his execution.

A memorial to a dog that inspired rioting in the streets of London.

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

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

Tombstones and enigmatic inscriptions hide within a vault beneath a popular London arts venue.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.