This unusual 7th-century Frankish seal offers more questions than answers about its past.

A 168-foot tower, part of the abandoned Chester Leadworks facility.

The spot where three Protestant clergymen were burned at the stake during the reign of "Bloody Mary."

The bones of two medieval royal lions were discovered at the historic fortress.

Hidden in the courtyard of the Victoria and Albert Museum is a little-known tribute to two celebrity pooches.

The gigantic skull of a long-extinct species that once roamed the forests of England and Ireland.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

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

A mysterious demonic figure peers down from its perch within the gorgeous Chester Cathedral.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

This hilarious English intersection is an automotive whirlpool.

Buried for centuries, this hidden cellar is all that remains of London's medieval Whitefriars Monastery.

This 11th century tower is said to be the oldest building in Oxford.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

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

Where condemned pirates met their grisly end at the gallows on the River Thames.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The bombed out remains of the old church were kept intact next to the new one, as a reminder of the futility of war.

The Egyptian-inspired last resting place of Lord Kilmorey.

Every hour on the hour a naked heroine and her leering foil appear from this giant cuckoo clock.

The Tudor-style cottage in the middle of the square is not quite what it seems.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

London's only public statue of the much-married monarch adorns the gate to St Bartholomew’s Hospital.