A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Now nearly dry, this lake is said to be the ancient home of the Lady of the Lake, and was once thought to be bottomless.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

The "shampooer of kings" who opened London's first curry cafe was a celebrity in the 19th century, but is all but forgotten now.

The best place in the world to buy tinned fish.

Grab a cuppa at England's first and only domestic tea plantation.

The fountain marks the area where hundreds of accused witches were burned at the stake.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

A student driver's nightmare.

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

This 1920s Dutch barge is now a floating bookstore.

An unassuming London park is actually a pilgrimage site for modern clowns.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Ancient snack bar of the Roman Empire re-opened.

Erotic art covers the walls of the largest ancient pleasure palace.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Breathtaking and huge 430 year old maps of Italy.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.