The Isle a La Cache Museum is part of the Forest Preserve District of Will County in Romeoville, Illinois near the Des Plaines River. Isle a la Cache Museum offers an adventure in 18th century history, when Illinois Country was home to French voyageurs and native Potawatomi. The Museum features interactive exhibits of the Great Lakes fur trade of the 1700s, in addition to a replica Native American longhouse. The Museum offers nature and history educational opportunities to school groups and youth groups.