Recently designated a National Historic Landmark,  the Oldfields’–Lilly House & Gardens is a 26-acre estate and historic house museum located on the grounds of the Indianapolis Museum of Art. At the heart of Oldfields’ is Lilly House, the 22-room mansion that was once home of J.K. Lilly Jr., the late Indianapolis businessman, collector and philanthropist. Oldfields’ magnificent gardens and grounds were designed in the 1920s by Percival Gallagher of the famous landscape architecture firm Olmsted Brothers.