The Rock County Historical Society Legacies Museum & Visitor's Center is housed in the 1912 Prairie-style residence of Stanley Dexter Tallman. It offers exhibit galleries that feature Pauline Pottery and Pickard China, as well as rotating exhibits celebrating the history and heritage of Rock County.

The Parker Pen exhibit features some of the most popular Parker pens in history from a world-renowned company that was based in Janesville. The Rock County Legacies exhibit looks back at decades of personal history showcasing the tenacity of the people who worked in the Janesville General Motors Assembly Plant at the very beginning, through twentieth-century cultural and technological changes, and the industry crisis that brought an end to a way of life.