Editing Ancient Roman architecture (section)

=== Watermills ===
{{further|List of ancient watermills}}
The initial invention of the [[watermill]] appears to have occurred in the [[Hellenistic civilization|Hellenized eastern Mediterranean]] in the wake of the [[conquests of Alexander the Great]] and the rise of [[History of science in Classical Antiquity#Hellenistic period|Hellenistic science and technology]].{{sfn|Wikander|2000a|pp=396f.}}{{sfn|Donners|Waelkens|Deckers|2002|p=11}}{{sfn|Wilson|2002|pp=7f.}} In the subsequent Roman era, the use of water-power was diversified and different types of watermills were introduced. These include all three variants of the vertical [[water wheel]] as well as the horizontal water wheel.{{sfn|Wikander|2000a|pp=373–378}}{{sfn|Donners|Waelkens|Deckers|2002|pp=12–15}} Apart from its main use in grinding flour, water-power was also applied to pounding grain,{{sfn|Wikander|1985|p=158}}{{sfn|Wikander|2000b|p=403}}{{sfn|Wilson|2002|p=16}} crushing ore,{{sfn|Wikander|2000b|p=407}} sawing stones{{sfn|Ritti|Grewe|Kessener|2007}} and possibly fulling and bellows for iron furnaces.{{sfn|Wikander|2000b|pp=406f.}}