A naturally mummified 2,000-year-old man.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

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

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A quiet memorial to those who died saving others in the heart of the City of London.

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

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

This unassuming building produced some of the world's most famous bells.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

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

Gods clash with machines in a power plant regenerated as a museum.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

A Nesting Doll of Churches.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

2300-year-old Roman road connecting the empire.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The underground sanctuary of a mysterious ancient cult.