The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

Hidden beneath the streets of London is a secret subway that only carried mail.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

A bronze bust commemorates the heroism of the secret agents who led covert operations against the Nazis.

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

The fences outside some of South London's estates are made from recycled World War II stretchers.

The Origin of On the Origin of Species.

The natural history museum displaying the British bird collections and dioramas of Edward Booth, free of charge.

Grotto replete with mystical designs laid out in glued shell mosaics.

This forgotten chalk mine was reopened thanks to a massive effort from the local community.

The last resting place of the famous Native American princess is marked by a haunting monument.