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

Largest lake in Great Britain measured by surface area.

The final resting place to 300 Victorian-era pets hides inside the city park.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

London's smallest police station is barely the size of a phone booth.

360° views of the city plus five floors of optical illusions and hands-on science.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

One part local history, 99 parts gruesome haunted house.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

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

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Northern Ireland's Brobdingnagian stepping stones.

Famously misunderstood wonder of the ancient world

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

Christ's blood preserved in a Belgian town.

A little sculpture with a large wardrobe.

This surreal memorial/cemetery is a necropolis of crumbling stonework and puzzle-shaped headstones.

Bridge that died in war and was resurected.

An homage to the medieval rulers of Bulgaria.

A magnificent, glittering building tucked into a tiny Bulgarian mountain town.

UNESCO-protected ancient burial ground.

"Holy Wisdom" overlooks the city that became its namesake.