Watermills have historically been used as a way to grind grain or power other machines by harnessing the energy of flowing or falling water. Today, some watermills still operate and provide a connection to history and traditions, while also being converted to produce renewable energy from hydropower. Overall, watermills exemplify humanity's ability to develop technologies that use natural resources to perform useful work.

1. Watermills

25. Images: Internet Music: “Tennessee Waltz”Adriana