Old maps and lost windmills at a UNESCO Heritage site together with an astonishing find of some twenty 18th century vernacular mills are presented in this paper. It is published here with permission from the President of The International Molinological Society, Willem van Bergen. See also the presentation Eighteenth Century Windmills in SW–Finland given at TIMS Berlin symposium in August 2019. This paper has been translated into Finnish… read more at https://www.historicwindmills.fi