Fort Kaskaskia State Historic Site

Fort Kaskaskia SHS
Eroded ramparts of Fort Kaskaska
Fort Kaskaskia State Historic Site is located in Illinois
Fort Kaskaskia State Historic Site
Fort Kaskaskia State Historic Site is located in the United States
Fort Kaskaskia State Historic Site
LocationCounty Roads 3 and 6, west of Chester, Illinois
Coordinates37°58′8″N 89°54′38″W / 37.96889°N 89.91056°W / 37.96889; -89.91056
Built1754 (1754)
Part ofFrench Colonial Historic District (ID74000772)
Added to NRHPApril 3, 1974
Topographic map of Fort Kaskaskia showing the boundary of the redoubt earthworks and the entrance and exit of the fort
Fort's key strategic location overlooking the Mississippi River valley

Fort Kaskaskia State Historic Site is a 200-acre (0.8 km2) park near Chester, Illinois, on a blufftop overlooking the Mississippi River. It commemorates the vanished frontier town of Old Kaskaskia and the support it gave to George Rogers Clark in the American Revolution.