Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.

The house in the middle of the motorway.

This foreboding medieval castle was twice besieged by barons rebelling against the English king.

This antique prison is a tourist attraction with a sordid past.

A fantastic castle rumored to be the birthplace of King Arthur.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

These picturesque ruins crumble beautifully into the ocean.

An architectural oddity hides in plain sight on this iconic London bridge.

A sturdy relic of Britain's once crucial gunpowder industry is now a haunting Cornish ruin.

Perhaps the only prehistoric monument with its very own public bus stop.

This historic factory peddles classic toys from the picturesque English county of Devon.

This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

One of Europe's oldest libraries.

Used as an example in one of the first dictionary entries for "museum" in 1706.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The cedar tree in Highgate Cemetery earned its title by accident.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.