The centuries-old obelisk may have inspired J. R. R. Tolkien.

A majestic mansion designed in Mughalai style, complete with a turquoise onion dome.

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

The geoglyph once sported a glass bottle eye.

Europe's largest prehistoric mound – burial site of a legendary king?

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

England's only square-dimension hill horse was built to celebrate Queen Victoria's coronation.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

Enormous terracotta heads of Queen Elizabeth and Prince Phillip can be seen on the side of the road to Windsor.

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

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

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

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

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

"The Most Wonderful Wonder that ever appeared to the Wonder of the British Nation."

A mysterious bridge over a sunken Roman road.

In pastoral England, a plaque marks where an imaginary community addressed the problem of combat mortality.

Thousands of rusting train cars have been slowly falling apart on the edge of Greece's second largest city.

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

Rare and wonderfully wormy cadaver art captured in brass for centuries.

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

A Neolithic burial site built 1,000 years before Stonehenge.

Deep in the countryside lie the remains of one of the grandest Roman dwellings in Britain.

A miniature village mimics the surrounding buildings so well it includes itself.