A relic of Victorian grandeur hides beneath a busy South London road.

This home on a quiet suburban street is completely covered with vibrant mosaics.

This museum tucked below a charming cafe gives a brief snapshot of photographic history.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

This 1920s Dutch barge is now a floating bookstore.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

Eighty million natural history specimens call this gargantuan museum home.

A hands-off space for graffiti artists to hone and display their skills.

A student driver's nightmare.

Banksy gives themself artistic license with this piece of London street art.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A kaleidoscopic warehouse-maze of handmade neon signs.

A misunderstanding gave this 18th-century racehorse a most amusing name.

The two-cell building in Nebraska was briefly owned by a teenage boy and then a Hollywood dummy.

A clerical error gave rise to this imaginary micronation in the southwestern corner of Estonia.

Thanks to a spelling mistake this bizarre beaver-tiger hybrid became the symbol of a Siberian town.

The tiny, studious rodents greet visitors to the National Archives of Finland.

A subterranean house of worship carved right out of the bedrock.

This striking memorial is one of Estonia’s most controversial Soviet leftovers.

Relics from an era long gone, sit idle outside this Estonian museum.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.