19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

This luxury shopping lane has been protected by its own tiny police force for over a century.

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

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

England's most notorious suicide spot.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

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

A relic from one of London's worst 19th-century slums.

This Manchester laundromat is hiding something.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

This overlooked street light once served as a KGB dead letter box.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Collection dedicated to brands, packaging and advertising.

This London plaque marks the spot where David Bowie's famous alien made his debut.

An artistic tribute to the famous singer, just around the corner from where he was born.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.