Within the museum there are a county recorders office, a general store and a recreated blacksmith shop using wood and square nails from a century old house. Other exhibits include gold mining paraphernalia, original fire fighting equipment, along with exhibits showing what a turn of the century home might have had for furnishings.
Traveling exhibits from the museum are used in conjunction with talks to school children, convalescent facility residents and senior citizens groups.
Periodically a new exhibit is displayed in the Changing Exhibit area. These exhibits have included a series on pioneer families within the county, ethnic and religious groups, as well as exhibits of quilts, local businesses, silver, fans and dolls.
One of the McHenry Museum's chief projects has been to provide a suitable archive for the history of the area. As such it has assembled a first class collection of early photos and documents.
Frequently a new exhibit is displayed in the museum along with slide shows, movies and musical events that are held in the auditorium.
Thanks to countless hours donated by the trained docents, many tours of the museum are held each year.