This allegedly haunted 16th-century tower house-turned-museum exhibits thousands of spectacular objects.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."

This secluded walkway overlooks a magnificently wild London green space.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

The ghosts of Britain's telecommunication past sit rusting away in a small village in England.

A century-old tradition has culminated in a small but singular collection of feline effigies.

No one knows who created the statues or if they are arranged properly—let alone the artwork's real name.

One of Europe's oldest libraries.

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

A giant pineapple, a symbol of hospitality, and an amazing vacation rental option.

A friendly pub with a sordid past in cock fighting.

In Twickenham sits a small whitewashed castle that inspired Mary Shelley's 'Frankenstein.'

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

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

The remains of a grand castle that may have inspired Bram Stoker's Dracula.

A open air theatre built on a cliff by an eccentric British woman.

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

The stately remains of Llywelyn the Great's mighty fortress.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.