The second largest surviving chained library is housed in this 12th century church.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

Human-made caves excavated to hide a secret society of wealthy pagans.

The mouldering remains of a disgraced British children's icon are hidden in the brush of a public park.

Over 100 years ago this pyramidal holding cell was reserved for rowdy drunks but now only offers five minute sentences.

The weathered grave of a medieval anchoress who walled herself up in a cell attached to a church.

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

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

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

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

The historic site where Queen Elizabeth I once gave a searing speech.

For over 500 years this timbered alms house has provided a home for elderly residents of Coventry.

All that remains of the medieval palace of the famous "Black Prince."

A preserved block of timber buildings from the city's industrial era in the Middle Ages.

This ruined medieval castle was the scene of Lord Robert Dudley’s seductive reception for Queen Elizabeth I.

Some wattle-and-daub, a Moorish mural, a glacial erratic, and a Giant named Gilbert.

This mysterious underground cave in Shropshire dates back to the 18th or 19th century.

There are hundreds of secret WWII bases hidden in British forests. Built to fight a Nazi invasion, they remained unknown for decades.

Built by the patron saint of illusionists this Elizabethan manor house is riddled with secret cubbies for hiding priests.

The designer of this railway tunnel added a birthday present for himself.

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.

Quaint, disturbing, and macabre objects are all on display at this intriguing collection of medical instruments from bygone eras.

A quaint hamlet of nine cottages around a small green near Blaise castle.

This 500-year-old Tudor home is a treasure trove of history and mystery.