A plaque marks the underground site of one of London's "lost rivers."

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

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

A quiet memorial to those who died saving others in the heart of the City of London.

It is against the law to obstruct the view from the top of this English burial mound.

Eclectic final resting place of the controversial explorer.

A gallery specifically dedicated to the botanical illustrations of a remarkable traveling lady.

Banksy gives themself artistic license with this piece of London street art.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

Ship-sized kinetic sculptural fantasy.

Catacombs turned marketplace.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

A comic book store that puts the marvel back in marvellous.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

The final resting place to 300 Victorian-era pets hides inside the city park.

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

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

Scattered throughout London are ancient remnants of the city's former bounding wall.

A memorial to a dog that inspired rioting in the streets of London.

London's old-school healing garden.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

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.