The Hessian Regional History Information System (LAGIS) is a digital resource for exploring the history, people, places, and culture of Hesse, Germany. Developed by the Hessian Institute for Regional History, it brings together reference works, research projects, historical sources, maps, and visual materials in one information system. Users can consult lexica and dictionaries, including regional language resources and biographies, and explore historical gazetteers, atlases, topographic surveys, and land registers.

LAGIS also provides access to historical photographs, views, medieval glass paintings, and information on historic towns, castles, monasteries, cemeteries, and other heritage sites. Its subject collections cover topics such as Jewish history, Hessian parliamentary and contemporary history, rural courts, emigration, military service, and the First World War. Bibliographies, archival records, and research projects support further study of regional history.

The site notes that LAGIS has a new address and that selected modules remain available through the former interface during a transition; existing permanent links are being redirected to the updated system