Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

Hang out with thousands of butterflies in one of the world's largest such enclosures.

A restaurant modeled after feudal Japan, where the waitstaff are trained as ninjas.

If Hello Kitty were Mickey Mouse, this would be Disneyland.

A Japanese concept restaurant that feels like a party thrown by the monsters in your closet.

A taste of the macabre Tokyo's ritzy shopping district.

Fine dining in the bizarre world of Lewis Carroll.

A magical place that lets you play in and explore the world of Studio Ghibli.

A Victorian school for poverty stricken waifs has been preserved as a museum to their donated education.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

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

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

London's largest outsider art museum.

Charles Babbage's proto-computer, painstakingly brought to life.

This 1920s Dutch barge is now a floating bookstore.

Collection dedicated to brands, packaging and advertising.

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

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

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

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

One of the world's largest collections of pathological specimens.

A cluttered and astounding collection of antiquities and curiosities.