Robertsville State Park is a Missouri state park on the Meramec River in the unincorporated community of Robertsville in Franklin County. Spanning 1,225 acres, it serves as a public recreation area with river access, day-use amenities, and overnight facilities. The park includes a boat launch, campground, playground, picnic shelters, and the Spice Bush Trail and Lost Hill Trail. Its location along the Meramec shapes both the landscape and the recreation it supports. The land was once owned by Edward James Roberts, who arrived in the area in 1831 at age 14, linking the park to the earlier history of Robertsville while preserving it today as outdoor public space in eastern Missouri.