During the weekend of 17/18th September 2016 many private and public buildings in Greater London are open for viewing with free admission.
These include several premises related to the history of medicine:
The Royal College of Physicians (+herb garden)
The Royal College of GPs
The Royal College of Nursing
The College of Optometrists
The Old Operating Theatre Museum
For details go to http://www.openhouselondon.org.uk/