This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

This popular square's history as the former site of a church is right beneath your feet.

This museum located in Fondi is also said to be the most haunted building in town.

This ancient market is often referred to as the oldest shopping mall in the world.

This tangled English forest looks like something right out of a fairytale.

Take a sea tractor to the Art Deco hotel on the island that inspired Agatha Christie.

This former quarry is now a vibrant labyrinth of magical in situ sculptures.

A remote gravestone on the moor marks the spot where a teacher's body was found under mysterious circumstances that remain inexplicable.

This mysterious chalk figure of a horse has been recreated and restored for more than a century.

A motley, fantastical agglomeration of unlikely houseboats along the Shoreham-by-Sea riverbank.

A museum devoted to the science of color.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

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

The fences outside some of South London's estates are made from recycled World War II stretchers.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

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

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

Taxidermied animals galore, by appointment only.

Huge concrete structures designed as an early warning system for Britain to detect enemy aircraft.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Largest lake in Great Britain measured by surface area.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.