One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

The ancient tomb acts as a calendar that keeps perfect time.

This is the site of the medieval holy well of St. Chad.

The house where Charles Darwin's grandfather formed many of his influential ideas and inventions.

These medieval carvings bear scars left by Parliamentarian troops during the English Civil War.

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

All that remains of the only English cathedral destroyed in the Protestant Reformation.

Every hour on the hour a naked heroine and her leering foil appear from this giant cuckoo clock.

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

A measuring mishap led to these artificial stone ladies losing their stomachs.

Taxidermied animals galore, by appointment only.

This South London cemetery holds the remains of more than 15,000 people.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

The oldest inn in England served brew to the crusaders.

This dreamy street will transport you to wintertime in Victorian England.

A replica of the famed statue far from home.

Built in the 1300s, this magnificent building that hosted England's kings and queens transports you to the Middle Ages.

The bombed out remains of the old church were kept intact next to the new one, as a reminder of the futility of war.

This amazing 15th-century mural remained hidden in plain sight for centuries.

An extraordinary collection of scientific instruments - and Einstein's chalkboard - inside the world's oldest purpose built museum building.

Used as an example in one of the first dictionary entries for "museum" in 1706.

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