See the inside of a Mueller fire hydrant in action during a temporary hands-on exhibit at the Hieronymus Mueller Museum in Decatur, IL. The museum is open every Tuesday through Saturday from 1pm to 4pm.

The Hieronymus Mueller Museum occasionally offers a paid Collections Internship. There is not an internship opportunity open at this time, but please check back.

All Central Illinois residents are invited to complete a short online survey to help the Hieronymus Mueller Museum with long-term exhibit planning. In the survey, you’ll get to see images from the museum’s collection and rate them based on how interesting they are to you! Complete the survey by Friday, October 13.

Central Illinois residents and visitors are invited to explore the Hieronymus Mueller Museum free of charge this summer! The museum is offering free admission to anyone who completes a short survey about their visit during May, June, and July 2023.