This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

One of the tallest maypoles remaining in England in one of its smaller villages.

This stretch of the River Severn where large waves flow against the current is the birthplace of river surfing.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.

An incarceration museum on the spot of possibly the oldest prison in England.

An ancient woodland that inspired a young J.R.R. Tolkien.

A rare survivor from the age of plagues.

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

The obelisk honors the cyclist troops who were killed during World War I.

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

An intriguing three-sided folly is a testament to one man's devotion to Catholicism and the number three.

Once-buried markers show England’s lowest land point keeps getting lower.

Man-made cave with enigmatic carvings, some say made by the Knights Templar themselves.

This cauldron was said to be hidden inside a church after it was borrowed from a local witch.

One of the oldest trees in Britain may have been witness to some of the country's formative moments.

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

A modern English garden of eccentric beasts, follies, and oddities.

An enormous alien invades Woking, England, as an homage to the H.G. Wells classic 'The War of the Worlds.'

The front of this 17th-century cottage also contains a large, stone face.

A woodland close to England's "most haunted village" has been the site of many unexplained events and deaths.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

A rotting air force base is now home to rare birds and scarce plants.