This guide, created by a group of specialised scientists, provides accurate and clear information about the Open-air Water Power Museum in Dimitsana, using popularised but not simple language. It contains an introduction that reflects the problems in creating a museum nucleus of pre-industrial workshops in the area. Following the introduction, tours in the museum areas -open-air and covered- are given, following the thematic units "The watermill and the fulling-tub", "Leather and tanning" and "The powder mill".