Archaeologists from the Museum of London have discovered the foundations of an 800-year-old water mill in south-east London. The 12th Century water mill found at Greenwich Wharf is believed to be one of the earliest tide-powered mills to be found in the capital.
Read the rest of the article at BBC.
It is quite amazing to see hydro-power in the 1100’s. Really shows just how advanced medieval people were in many ways.
On a side note, what is up with the 5 other comments on this page?
And such ingenuity proves why scholars hate the term “Dark Ages” to describe the Middle Ages
I deleted the five other comments. Not sure where they came from.