Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

Ship-sized kinetic sculptural fantasy.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

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

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

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

London's old-school healing garden.

Abstract dinosaur models in London.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

Eighty million natural history specimens call this gargantuan museum home.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

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

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

This one-time health resort was used by aristocrats around the world.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A miniature train-ride through Slovenia's largest cave system.

This abandoned Slovenian military barracks has become a punky-political art squat.

A whimsical bridge adorned with decorative dragons.

The Slovenian architect designed many landmarks in the capital city, including his own dream house.