Hessisches Landesarchiv

The central archives for the German state of Hesse.

It was created 1 January 2013 from the union of the Hessisches Hauptstaatsarchiv, the Hessisches Staatsarchiv Darmstadt, and the Hessisches Staatsarchiv Marburg, which remain as regional archives.

More information on the German Wikipedia page.

The website, in German, is.