This demon atop the Notre-Dame de Paris looks utterly bored.

Over several decades, one of London’s most iconic city gates was dismantled, moved out of the city, and then moved back.

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 sculpture of the deceased cockatoo flops atop its personal plinth.

These stained-glass windows are all that remains of a building that was the target of one of the biggest explosions in London after World War II.

An oddity of a bygone era that stills functions today.

A totem pole of heads to represent the different stages of life.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

This Underground station has been a popular filming location for decades, even before it closed.

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

The pretty iron lamp is a reminder of the architecture underneath London's streets.

The first regular high-definition TV transmissions were made from this seemingly out-of-place mast located on one corner of a Victorian-era entertainment venue.

This may be the last of London's wooden pavements, which were once a common sight in the city.

A famous burial ground with a history both grim and literary.

Artists and musicians now rule over this former rail station.

The bronze uniforms commemorate the vital role of women during World War II.

This magnificently macabre shield shows the power of chivalrous love in medieval times.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

A gruesome and mysterious ancient sculpture of a pagan deity from the Roman occupation of Celtic Britain.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

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

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

This pub boasts a curious history and may have inspired a Dickens character.