Arkansas’s tallest remaining, prehistoric American Indian mounds are preserved at this National Historic Landmark site near Little Rock. The mounds and an earthen embankment are the remains of a large ceremonial and governmental complex that was inhabited here from A.D. 600 to 1050. Managed by Arkansas State Parks in conjunction with the Arkansas Archeological Survey, the Toltec site serves as both a state park and an archeological research station.
Interesting exhibits in (free) visitor center, big picnic/bbq area. Nice paved and/or grass paths with easy access. (Dogs allowed, on leash.) Huge grounds, so even if there’s a school field trip it won’t be overcrowded – there’s even a separate Education Center building. Good & relevant gift shop. Allow time for the nearby Plantation Agriculture Museum, they have much more than you’d think.