Winfield Mounds Forest Preserve was named for burial mounds of pre-historic Native Americans who lived along the West Branch of the DuPage River. The three mounds at this site are dome-shaped and set in a triangular pattern and are the only documented pre-historic burial site in DuPage County. The mounds lie west of the river, along the edge of a mature oak-hickory forest. After vandals dug up the mounds in the 1920s, and subsequent digs by the University of Chicago and Wheaton College, it is believed that nothing more remains in the mounds.
Winfield Mounds Forest Preserve currently stands as an undeveloped, natural area consisting of restored savannas, open fields and prairie, with the West Branch of the DuPage River flowing through it.