A labyrinth hides in plain sight at each of the city's 270 Tube stations.

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

Claiming to be the oldest hat store in the world, this historic haberdashery had a hand (and a head) in the creation of the Bowler.

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 secluded walkway overlooks a magnificently wild London green space.

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

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

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

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

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

London's old-school healing garden.

This coffee shop lies hidden beneath a historic church.

A mysterious artist-run cabinet of curiosities and library.

Remnants of a Victorian garden feature sitting in public woodland.

The anatomical-pathological collection of a man who changed surgery.

The curios of pharmacist and collector Henry Wellcome.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

An unusual round church in London with a Templar past.

Rebuilt remains of a temple to Roman god Mithras.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.