House of the Millstones, Ostia Antica archaeological site, Ostia, Rome province, Latium (Lazio), Italy, Europe

Husk mill, historic olive oil press with granite millstones used until 1970s now a heritage monument to a former industrial past, village of Alvito, Beja district, Baixa Alentejo, Portugal, Europe

Three millstones from a mill in Unterschlauersbach, 1575, Franconian Open Air Museum, Eisweiherweg 1, Bad Windsheim, Middle Franconia, Bavaria, Germany, Europe