Monks Mound is the largest Pre-Columbian earthwork in the Americas and the largest pyramid north of Mesoamerica. The beginning of its construction dates from 900-955 CE. Located at the Cahokia Mounds UNESCO World Heritage Site near Collinsville, Illinois, the mound size was calculated in 1988 as about 100 feet high, 955 feet long including the access ramp at the southern end, and 775 feet wide. This makes Monks Mound roughly the same size at its base as the Great Pyramid of Giza. The perimeter of its base is larger than the Pyramid of the Sun at Teotihuacan. As a platform mound, the earthwork supported a wooden structure on the summit.
The Anna Site is a prehistoric Plaquemine culture archaeological site located in Adams County, Mississippi 10 miles (16 km) north of Natchez. It is the type site for the Anna Phase of the Natchez Bluffs Plaquemine culture chronology. It was declared a National Historic Landmark on September 14, 1993.
The Plaquemine culture was an archaeological culture centered on the Lower Mississippi River valley. It had a deep history in the area stretching back through the earlier Coles Creek and Troyville cultures to the Marksville culture. The Natchez and related Taensa peoples were their historic period descendants. The type site for the culture is the Medora Site in Louisiana; while other examples include the Anna, Emerald, Holly Bluff, and Winterville sites in Mississippi.
The Gahagan Mounds Site (16RR1) is an Early Caddoan Mississippian culture archaeological site in Red River Parish, Louisiana. It is located in the Red River Valley. The site is famous for the three shaft burials and exotic grave goods excavated there in the early twentieth century.
Frogmore Mound Site is an archaeological site of the Late Coles Creek culture in Concordia Parish, Louisiana. The site is located 7 miles (11 km) west of Ferriday on US 84. It was added to the National Register of Historic Places on July 28, 2004.
Filhiol Mound Site is an archaeological site of the Coles Creek culture in Ouachita Parish, Louisiana on a natural levee of the Ouachita River.
Balmoral Mounds is an archaeological site of the Coles Creek culture in Tensas Parish, Louisiana. The site has components located both on the east and west sides of US 65 near Bayou Rousset.
Ghost Site Mounds is an archaeological site in Tensas Parish, Louisiana with an Early to Middle Coles Creek culture component and a Late Coles Creek to Plaquemine culture component.
Fitzhugh Mounds is an archaeological site in Madison Parish, Louisiana from the Plaquemine\Mississippian period dating to approximately 1200–1541 CE. It is the type site for the Fitzhugh Phase(1350-1500) of the Tensas Basin Plaquemine Mississippian chronology.
Scott Place Mounds is an archaeological site in Union Parish, Louisiana from the Late Coles Creek-Early Plaquemine period, dating to approximately 1200 CE. The site is one of the few such sites in north-central Louisiana.
Venable Mound is an archaeological site in Morehouse Parish, Louisiana with a single mound with components from the Troyville, Coles Creek and Plaquemine period.
The Greenhouse Site is an archaeological site of the Troyville-Coles Creek culture in Avoyelles Parish, Louisiana.
The Raffman Site is an archaeological site located in Madison Parish, Louisiana and constructed between 700 and 1200 CE. It has components from the Tchefuncte culture and the Coles Creek culture, whose main period of occupation was during the Balmoral Phase(1000-1100 CE) of the Tensas Basin and Natchez Bluffs chronology and which was virtually deserted by the end of the Preston Phase .
Transylvania Mounds is an archaeological site in East Carroll Parish, Louisiana with components from the Coles Creek (700–1200)CE and Plaquemine/Mississippi periods (1200–1541). It is the type site for the Transylvania Phase of the Tensas Basin Plaquemine Mississippian chronology.
Sundown Mounds is an multimound archaeological site in Tensas Parish, Louisiana from the Early Coles Creek culture. It is the type site for the Sundown Phase of the Tensas Basin and Natchez Bluff Coles Creek chronology.
Flowery Mound is an archaeological site in Tensas Parish, Louisiana with components from the Late Coles Creek and Plaquemine-Mississippian culture which dates from approximately 950–1541.
Marsden Mounds is an archaeological site with components from the Poverty Point culture and the Troyville-Coles Creek period. It is located in Richland Parish, Louisiana, near Delhi. It was added to the NRHP on August 4, 2004, as NRIS number 04000803. It is the type site for the Marsden Phase of the Tensas Basin and Natchez Bluff regions local chronology.
Julice Mound is an archaeological site in East Carroll Parish, Louisiana with a Plaquemine culture component dating to 1200–1541 CE and located less than one mile from Transylvania Mounds.
Bayou Grande Cheniere Mounds is an archaeological site in Plaquemines Parish near the southeast corner of Louisiana. Built by the Coastal Coles Creek culture, it was inhabited from 875 to 1200 CE, from the Early Coles Creek period to the Coles Creek/Plaquemine period.
