Antique skeletons and taxidermy creatures were found crammed in a university closet.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

Indents in the pavement are all that remain from a grisly death machine in Paris.

This grand manse has been transformed into a museum devoted to one of the founders of Fantastic Realism.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

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

A Roman spa buried deep beneath the City of London.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

Giant, friendly pelicans in Central London, the most unlikely of places.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

This hidden green space is the city's second largest conservatory.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

This 19th-century pub features stained-glass windows celebrating Victorian-era "champions."

There's an exclusive Beefeaters pub hidden in the Tower of London.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

Abstract dinosaur models in London.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

A little slice of Japan and its aesthetics in London's Holland Park.

Catacombs turned marketplace.

Rebuilt remains of a temple to Roman god Mithras.