John Snow's Cholera Map - Visualized (again!)

Remember John Snow? The Cholera guy? The dude who pretty much invented epidemiology?  In case you don't, and didn't check out the Wikipedia link above, he mapped out the incidence of cholera during an outbreak in 1854, and based on the pattern, deduced that (being clustered around the Broad Street public water pump) cholera was spread by contaminated water.

That map is now justifiably famous - and is the one you see to the right (embiggen for its full glory)

The folks at The Guardian (who are constantly brilliant at this sort of stuff) have recreated the map using the original data and CartoDB.  I've embedded a screen-grab below, but go to their site for the original.
Mapping tools have certainly become quite awesome, no?