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German Society for Mill Studies and Mill Preservation

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The German umbrella organisation for mill studies and the preservation of historic wind and water mills.

Last updated September 28, 2026

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Overview

The Deutsche Gesellschaft für Mühlenkunde und Mühlenerhaltung e. V. (DGM) — the German Society for Mill Studies and Mill Preservation — is the umbrella organisation for mill studies in Germany. It was founded on 24 October 1987 in Minden, in the Ostwestfalen region, as a registered association (eingetragener Verein), and has its seat in Petershagen-Frille near Minden. The initiative for its founding came from Wilhelm Brepohl. The DGM is a membership organisation rather than a commercial enterprise. Its members are the DGM's regional state associations (Landesverbände) together with local mill associations and individual mill enthusiasts. Its statutory aims are the preservation of windmills and watermills and research into the development of the milling system. The society works to make clear the significance of mills as technical cultural monuments, to communicate their history to a broader public, and to advocate the expert preservation and use of historic mills as witnesses to the history of technology. Since 1994 the DGM has organised the Deutscher Mühlentag (German Mill Day) every year on Whit Monday (Pfingstmontag). On that day more than 1,000 participating wind- and watermills across Germany open for visits. The German Mill Day grew out of the Lower Saxony Mill Day and the district mill day of the Westfälische Mühlenstraße. The society's official members' magazine is Der Mühlstein, published since 1985 for Lower Saxony and Bremen and since 1988 nationwide; it appears four times a year. The DGM also publishes books on milling, including Kleine Mühlenkunde. Deutsche Technikgeschichte vom Reibstein zur Industriemühle (2010), edited by the DGM. The DGM's member associations cover most German federal states, including Schleswig-Holstein/Hamburg, Mecklenburg-Vorpommern, Niedersachsen/Bremen, Sachsen-Anhalt, Berlin/Brandenburg, Nordrhein-Westfalen, Hessen, Thüringen, Sachsen, Rheinland-Pfalz/Saarland, Bayern and Baden-Württemberg. Through this network the DGM functions as the central point of contact for mill preservation, mill research and public engagement with Germany's milling heritage.

History

The Deutsche Gesellschaft für Mühlenkunde und Mühlenerhaltung e. V. (DGM) was founded on 24 October 1987 in Minden, in the Ostwestfalen region of Germany, as a registered association. The initiative for its founding came from Wilhelm Brepohl. Its seat is in Petershagen-Frille near Minden. The society was created as the umbrella organisation for mill studies in Germany. Its members are the DGM's regional state associations (Landesverbände) as well as local mill associations and individual mill enthusiasts. Its statutory aims are the preservation of wind- and watermills and research into the development of the milling system. The DGM seeks to make clear the significance of mills as technical cultural monuments, to communicate their history to a broader public, and to advocate the expert preservation and use of historic mills as witnesses to the history of technology. A key public activity is the Deutscher Mühlentag (German Mill Day), which the DGM has organised every year since 1994 on Whit Monday (Pfingstmontag). On that day more than 1,000 participating wind- and watermills across Germany open for visits. The German Mill Day grew out of the Niedersächsischer Mühlentag (Lower Saxony Mill Day) and the Kreismühlentag of the Westfälische Mühlenstraße. The society's official members' magazine is Der Mühlstein, published since 1985 for Lower Saxony and Bremen and since 1988 nationwide; it appears four times a year. The DGM also acts as publisher of books on milling, including Kleine Mühlenkunde. Deutsche Technikgeschichte vom Reibstein zur Industriemühle (Terra Press, Berlin/Potsdam, 2010), edited by Philipp Oppermann and Torsten Rüdinger on behalf of the DGM. Structurally, the DGM groups a set of regional member associations covering most German federal states: Schleswig-Holstein/Hamburg (Verein zur Erhaltung der Wind- und Wassermühlen in Schleswig-Holstein und Hamburg), Mecklenburg-Vorpommern (Mühlenverein Mecklenburg-Vorpommern), Niedersachsen/Bremen (Mühlenvereinigung Niedersachsen-Bremen), Sachsen-Anhalt (Arbeitskreis Mühlen Sachsen-Anhalt), Berlin/Brandenburg (Mühlenvereinigung Berlin-Brandenburg e. V.), Nordrhein-Westfalen (Westfälisch-Lippische Mühlenvereinigung, Mühlenverein im Kreis Minden-Lübbecke, Rheinischer Mühlenverband, Mühlenverband Rhein-Erft-Rur), Hessen (Hessischer Landesverein zur Erhaltung und Nutzung von Mühlen), Thüringen (Thüringer Landesverein für Mühlenerhaltung und Mühlenkunde), Sachsen (Sächsischer Mühlenverein), Rheinland-Pfalz/Saarland (DGM-Landesverband Rheinland-Pfalz und Saarland), Bayern (Bayerischer Landesverband für Mühlenkunde und Mühlenerhaltung) and Baden-Württemberg (DGM-Landesverband Baden-Württemberg).

  • 2010

    DGM publishes Kleine Mühlenkunde. Deutsche Technikgeschichte vom Reibstein zur Industriemühle.

  • 1994

    First Deutscher Mühlentag (German Mill Day) held on Whit Monday; it becomes an annual event.

  • 1988

    Der Mühlstein becomes a nationwide publication.

  • 1987

    DGM founded on 24 October in Minden as a registered association; Wilhelm Brepohl is the initiator.

  • 1985

    Der Mühlstein begins publication for Lower Saxony and Bremen.

Products and positioning

Non-profit umbrella association for mill studies and the preservation of historic wind- and watermills in Germany.

  • Der Mühlstein

    Official members' magazine of the DGM, published since 1985 for Lower Saxony and Bremen and since 1988 nationwide; appears four times a year.

  • Deutscher Mühlentag (German Mill Day)

    Annual event on Whit Monday since 1994, with over 1,000 participating wind- and watermills open for visits across Germany.

  • Kleine Mühlenkunde. Deutsche Technikgeschichte vom Reibstein zur Industriemühle

    Book published by the DGM (Terra Press, Berlin/Potsdam, 2010), edited by Philipp Oppermann and Torsten Rüdinger.

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