The bell that once tolled atop a lost Edinburgh gate now hangs for all to see.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

The 20th-century chapel’s intricate woodwork includes amazing details, most notably angels playing bagpipes.

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

The Scottish Reformation leader's grave was paved over and is now a parking lot.

These plaques located in a court preserve a small piece of Edinburgh's history.

A sweet symbol marks the place where torturous executions were once carried out.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A striking glass tribute to two sisters who suffered during Scotland's "Killing Time."

A distinctive building that incorporates a mythical beast into its architecture.

Largest lake in Great Britain measured by surface area.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

One of London’s rare Tudor-era buildings is a fate-defying gatehouse for a church.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

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

Scattered throughout London are ancient remnants of the city's former bounding wall.

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

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

This statue of one of the engineers who created the London Underground hides a ventilation shaft for the tube lines that run under the street.

The Great Fire of London and the regulation of one-way streets both started in this alley.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.