🇺🇸 United States · Earthwork
Etowah Indian Mounds
Mississippian, Etowah phase 1000–1550 CE · Mississippian (Muscogean ancestors)
19-m Mississippian Temple mound with copper falcon plates and marble effigies.
🇺🇸 United States · Archaeological wonder
Key Marco Archaeological Site
Glades IIIb–Calusa 500–1500 CE · Glades Calusa
Calusa Court of the Pile Dwellers: waterlogged painted wood Cat statuette, masks and netting 500–1500 CE.
🇺🇸 United States · Archaeological wonder
Canyons of the Ancients National Monument
Basketmaker II–Pueblo III 1500 BCE–1300 CE (peak 1000–1300) · Ancestral Puebloan (Anasazi, Basketmaker to Pueblo III)
Largest archaeological landscape in US implying 30,000 people: 176,000-acre (71,200 ha) monument with 6,355 recorded sites – villages, cliff dwellings, kivas, towers and shrines from Basketmaker to…
🇺🇸 United States · Earthwork
Marietta Earthworks
Middle Woodland Hopewell (100 BCE–500 CE) · Hopewell (Marietta phase)
Hopewell ceremonial complex (100 BCE–500 CE) at confluence of Muskingum and Ohio Rivers, originally three enclosures: Capitolium Square (150×110 m terraced platform and graded way), Quadranaou double…
🇺🇸 United States · Geoglyph
Blythe Intaglios
Late Prehistoric 1000–1500 CE (OSL), possibility Protohistoric · Mojave/Quechan; Patayan culture
Mojave giant desert figures: 50-m human intaglios above Colorado River.
🇺🇸 United States · Earthwork
Rock Lake – Aztalan's Sunken Pyramids Claim
Late Woodland effigy mound period (700–1200 CE) · Late Woodland effigy-mound builders (ancestral Ho-Chunk)
Contested submerged 'pyramids' in Wisconsin lake beside verified Woodland effigy mounds on shore.
🇺🇸 United States · Geoglyph
Topock Maze (Mystic Maze) Geoglyphs
Late Prehistoric (Patayan) to Historic · Mojave (Aha Makav) / Quechan
18-acre windrow maze (800–1200 CE) in Mojave Valley — 600-m herringbone pale strips.
🇺🇸 United States · Geoglyph
Bouse Fisherman Intaglio (Fisherman Geoglyph)
Late Prehistoric (Patayan) · Yuman (Mojave/Quechan)
9-m Fisherman intaglio (900–1200 CE) on Plomosa piedmont — spearman with fish and sun.
🇺🇸 United States · Archaeological wonder
Casa Grande Ruins National Monument
Classic Hohokam 1150–1450 CE (Sedentary to Classic transition) · Hohokam (Ancestral Sonoran Desert, ancestors of O’odham)
Ancestral Sonoran Desert four-story Great House (18 m × 13 m, 4 storeys, 11 rooms, caliche clay walls 1 m thick, internal loopholes) – largest known Hohokam structure, preserved under 1932 modern…
🇺🇸 United States · Archaeological wonder
Bandelier National Monument
Ancestral Pueblo III–IV 1150–1550 CE (Pajarito Plateau settlement after Mesa Verde diaspora) · Ancestral Puebloan / Keresan and Tewa (ancestors of Cochiti, San Ildefonso, Santa Clara)
13,355 ha of Frijoles Canyon with tuff cliff dwellings (cavates), mesa-top Tyuonyi Pueblo (400 rooms, 1–3 storeys) and Long House cliff village (800 m long) in soft Bandelier Tuff (1.1 Ma Jemez…
🇺🇸 United States · Archaeological wonder
Pueblo Grande de Nevada (Lost City)
Ancestral Pueblo Virgin branch Basketmaker III–Pueblo II · Ancestral Pueblo (Virgin Anasazi / Ancestral Pueblo)
100-room Virgin Anasazi pueblo complex partly drowned by Lake Mead, 300 BCE–1150 CE.
🇺🇸 United States · Archaeological wonder
Aqueduct Arch Section South — Southwest (Santa Fe)
Early Medieval (500–1000 CE) · Local Neolithic
Aqueduct Arch Section South in Southwest, United States is a Early Medieval (500–1000 CE) archaeological wonder attributed to Local Neolithic culture.
🇺🇸 United States · Temple complex
Pueblo Bonito - Chaco Canyon Great House
Chacoan Phenomenon 828–1126 CE · Ancestral Puebloan (Anasazi) Chaco
Pueblo Bonito – Chaco's 800-room D-shaped great house (828–1126 CE), 4 stories, 650 rooms, theatral central plaza and 32 kivas, aligned to cardinal directions and Chaco meridian.
🇺🇸 United States · Archaeological wonder
Casa Malpais Archaeological Park and National Historic Landmark
Mogollon–Ancestral Puebloan 1260–1350 CE · Mogollon–Ancestral Puebloan
60-room basalt Great House 1260–1350 CE, Great Kiva solar calendar.
🇺🇸 United States · Earthwork
Fort Hill Earthwork and Nature Preserve
Hopewell Middle Woodland 100–400 CE · Hopewell tradition
14.6 ha hilltop enclosure 2.4 km wall, 33 gateways.
🇺🇸 United States · Megalith
Bighorn Medicine Wheel
Late Prehistoric 1200–1700 CE · Plains Indians
24 m medicine wheel 28 spokes, solstice alignments.
🇺🇸 United States · Archaeological wonder
Chaco Culture National Historical Park
Pueblo II–III 850–1250 CE (Chacoan fluorescence 1020–1140) · Ancestral Puebloan (Anasazi) / Chacoan
Chacoan canyon with 15 monumental Great Houses (Pueblo Bonito 650 rooms, 35 kivas) and engineered roads, built 850–1150 CE by Ancestral Puebloans as ritual and trade center for San Juan Basin,…
🇺🇸 United States · Geoglyph
Bouse Northern Wash Intaglios (La Posa Plain Extension)
Late Prehistoric (Patayan II–III) · Patayan / Hakataya (Yuman)
9+ Patayan intaglios (880 BP–1500 CE) on La Posa Plain north of Bouse — Colorado River style.
🇺🇸 United States · Earthwork
Junction Group Earthworks
Middle Woodland Hopewell (100 BCE–500 CE) · Hopewell tradition
Unusual Hopewell (100 BCE–500 CE) enclosure complex at confluence of Paint Creek and North Fork, comprising nine geometric elements—four circles, two squares, crescents and parallel walls—covering 26…
🇺🇸 United States · Ancient city
Blood Run Site
Late Prehistoric Oneota (Blood Run phase 1500–1700 CE) · Oneota (ancestors Dakota-Ioway)
Largest Oneota town 1500–1700: 76 mounds and boulder enclosure, 6,000 residents on Big Sioux.
🇺🇸 United States · Archaeological wonder
Walpi Pueblo
Ancestral Hopi (Hisatsinom) to Historic Hopi 900 CE–present · Hopi (Hisatsinom, Hopi-Tewa)
Continuously inhabited 900 CE Hopi terraced pueblo atop 300-m mesa.
🇺🇸 United States · Archaeological wonder
Wupatki National Monument
Pueblo II–III 1120–1250 CE (post-Sunset Crater) · Sinagua / Ancestral Puebloan (Hisatsinom) with Mogollon/Hohokam influences
100-room red-Moenkopi sandstone pueblo with tower-kiva and Hopi-style ballcourt, outlier of Sinagua-Hisatsinom frontier after Sunset Crater eruption (1085 CE) improved farming.
🇺🇸 United States · Archaeological wonder
Hovenweep National Monument
Pueblo III 1200–1300 CE · Ancestral Puebloan
Six Pueblo tower villages 1200–1300 CE, Square Tower.
🇺🇸 United States · Archaeological wonder
Gila Cliff Dwellings National Monument
Mogollon Tularosa 1275–1300 CE · Mogollon
46 rooms in five caves 1275–1300 CE, Mogollon.