A museum of co-operativism housed in the birthplace of the modern movement.

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

A series of carved figures that scandalized British society.

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

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

This unassuming building produced some of the world's most famous bells.

This peeling mural of Adam and Eve was inspired by the greenhouses at Kew Gardens.

The English bed-and-breakfast believed to have inspired Emily Brontë's novel "Wuthering Heights."

A gruesome and mysterious ancient sculpture of a pagan deity from the Roman occupation of Celtic Britain.

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

The sculpture of the deceased cockatoo flops atop its personal plinth.

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

This historic building displays the remains of a victim of the devastating 14th-century plague.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

This mysterious and unique painting is filled with symbolism.

These morbid carvings remind churchgoers of the inevitability of death.

This striking statue brings a scene from the African savannah into central London.

This informal museum is a magical trove of anonymous art collected from car boots and flea markets.

Victorian-era Londoners really wanted to believe this 17th-century cistern was actually an ancient artifact.

The grand complex of buildings that comprise Liverpool's Exchange Flags includes a vast World War II bunker that has been frozen in time.

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

A once grand hotel now sits eerily abandoned in the Catalan countryside outside Barcelona.

The former 1920s mansion of a prominent Catalan developer was used as the Soviet Embassy during the Spanish Civil War, and there is still a bunker below the garden.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.