A worldwide technology outage is causing disruption to some State of Illinois online systems. We are aware of this issue and are diligently working on restoration.

The Illinois State Museum headquarters facility located on Spring Street in Springfield will be temporarily closed beginning August 1, 2024, for a construction project. Learn more.

Welcome to the Illinois State Museum System

The Illinois State Museum System includes the headquarters museum and ISM-Research & Collections Center both in Springfield with branch sites ISM-Dickson Mounds in Lewistown, and ISM-Lockport Gallery in Lockport.

The Illinois State Museum System inspires exploration of Illinois' past and present to inform and enrich everyday life and to promote stewardship of cultural and natural resources for the future. The Museum's extensive collections and research activities provide the foundation for exhibitions and public programs that tell the story of the land, life, people, and art of Illinois.

Visit ISM-Springfield

Visit ISM-Dickson Mounds

Visit ISM-Lockport Gallery

Visit ISM-Research & Collections Center

Illinois America 250