This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

One part local history, 99 parts gruesome haunted house.

Ship-sized kinetic sculptural fantasy.

An architectural oddity hides in plain sight on this iconic London bridge.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

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

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Hidden in the courtyard of the Victoria and Albert Museum is a little-known tribute to two celebrity pooches.

The bones of two medieval royal lions were discovered at the historic fortress.

Repository for more than 22 million pickled specimens.

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

An unusual round church in London with a Templar past.

A mysterious carving from 17th-century London seemingly depicts a young boy sitting on a bread basket.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

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

This haunting sculpture was created as a statement on the mechanized warfare of the First World War.

This macabre painting of a Shakespearean scene looks like something out of a nightmare.