Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

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

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

Protecting the dead from opportunistic body snatchers.

The most loyal of little dogs, or a Victorian era publicity stunt?

The final resting place of soldiers' loyal canine companions.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

A book bound in the skin of an infamous criminal, along with countless other specimens.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

360° views of the city plus five floors of optical illusions and hands-on science.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Two small markers remember the Alamo's feline protectors.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This mysterious and unique painting is filled with symbolism.

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

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

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

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

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

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

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

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

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

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