This 700-year-old street food market features baby octopus and soy donuts.

The 10,000 Torii shrine.

This tiny museum hidden above a restaurant houses thousands of modern and traditional kites.

Once a black market electronics marketplace, now an otaku shopper's paradise.

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

Where's a guy to go after a long, hard day at work?

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

Visit on a Sunday morning to see some killer tricks.

Historic church where a number of Shakespeare's actors are buried.

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

Pop culture has helped to keep this iconic British building from being destroyed.

A historic arboretum and non-conformist, non-denominational park cemetery.

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

The largest greenhouse in the world is home to over one million types of plants.

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

Catacombs turned marketplace.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

360° views of the city plus five floors of optical illusions and hands-on science.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

Famously misunderstood wonder of the ancient world

Kings Cross Station pays tribute to its role in Britain's best-selling book series.