High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A modern mini-Stonehenge is hidden in a public reserve, not far from a former Viking stronghold.

A book bound in the skin of an infamous criminal, along with countless other specimens.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

Nestled among the living residents is the final resting place of an apothecary plague victim.

Even though some of the buildings date back to the Victorian era, this research institute is still involved in cutting-edge astronomy research.

A watchhouse constructed from tombstones, to make way for a burial pit, for the victims succumbing to a deadly disease.

What was once England's second-richest abbey is now a haunting ruin.

A 30-acre garden inspired by the principles of modern physics.

This tidal island, a sacred site in early English Christianity, was the target of a notable Viking invasion.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

The highest peak in all of England is plagued by dangerously fickle climate shifts.

A rocky outcrop where monks hid their most holy relic while escaping Danish invaders.

The only surviving leech house in the United Kingdom was a home for bloodsucking worms until the 1900s.

This 13th century castle is chock full of ghosts and impossibly rare cows.

A series of idealized caves carved to entertain guests.

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

These remarkable cascades are the jewels of Upper Tees.

Also known as "Robin Hood's tree," this tree became a famed location along Hadrian's Wall before it was cut down in an act of vandalism.

This moss-covered boulder is said to be part of a diabolical plant to sabotage the Durham Cathedral's foundation.

This Georgian Gothic building was created to shelter and feed deer.

These lamps were created to expel sewer gases after an event known as The Great Stink.

An unusual stone chair can be found on the banks of the River Wear, not far from Durham Cathedral.

An enigmatic sculpture depicts a ruined home with debris stretching for over half a mile along the river.