Fort Kaskaskia State Historic Site is located on the remains of historic Fort Kaskaskia, constructed by the French in the 1700s to defend the town of Kaskaskia. Founded in 1703, the town was a central commercial center. The fort was periodically occupied by French or U.S. troops until 1807.

The remnants of Fort Kaskaskia include long earthworks forming a rough square. A footpath leads to the Pierre Menard Home State Historic Site, located at the bottom of the bluff.

Near the pavilion, which was recently rebuilt after being destroyed by a fire, you can get sweeping view of the Mississippi river below. The overlook area includes picnic shelters with tables and grills.

The campground includes tent-camping and RV sites, 32 are electric sites. There is a bathroom and shower building.