A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

The castle still holds traces of the abandoned Roman fort it was built atop.

Recently restored menagerie of Victorian-era beasts.

Modern commuters still pass through this 2,000-year-old Roman archway.

Inside this chapel, Victorian jailers took the separate system to new levels.

Legend says this demonic carving inside a medieval cathedral was one of Satan's minions.

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Ancient human remains unearthed around the iconic monument.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

The first archaeological site discovered by aerial photography.

Famously misunderstood wonder of the ancient world

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

The final resting place of soldiers' loyal canine companions.

This small museum in a 17th-century building honors three iconic Scottish writers.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

This massive monument has been telling the time for 150 years—at a slight angle.

A museum marks and documents the site of the Titanic's launch.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

This short bridge is the only thing connecting a tiny Irish island to the mainland.