The Robert R. McCormick Museum is located in Wheaton, Illinois and is part of the Cantigny Park. It was the former home of Robert R. McCormick, a prominent newspaper publisher and the owner of the Chicago Tribune. The museum showcases his life, career, and contributions to journalism and the community. Visitors can explore the beautifully preserved mansion, which features original furnishings and personal artifacts. The museum also offers exhibits on McCormick's interests, including military history and horticulture, reflecting his legacy and the history of the First Division of the U.S. Army, which he supported.