Since 1976 the Flagg Creek Heritage Society (FCHS) has preserved the history of the Flagg Creek area. The Flagg Creek area which runs along the Des Plaines river has a rich history dating back to the Potawatomi settelements, the fur trade and early settlers. The Society maintains the Flagg Creek Historical Museum and the Robert Vial House located on the Pleasant Dale Park District grounds at 7425 and 7385 South Wolf Road in Burr Ridge. The Museum is open the first Sunday of every month, April through October from 2 – 4 pm. and from 10:00 a.m. until 1:00 p.m. on most Mondays year round.