Now known as Lilly House, the 22-room mansion has undergone historic restoration and is now open to the public. The historic house is currently interpreted to reflect the 1930s era when the Lilly family occupied the residence. The rest of the Oldfields estate, which was given to the Art Association of Indianapolis by Lilly's children in 1967, now makes up a major portion of the Newfields campus. In addition to the home's significance as a representation of the American country house movement, Oldfields' gardens and grounds are a rare example of a preserved estate landscape designed by Percival Gallagher of the Olmsted Brothers firm.