🇺🇸 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 · Ancient village
Mesa Verde Cliff Palace Tower House
Neolithic to Iron Age (6000 BCE–500 CE) · Neolithic
Mesa Verde Cliff Palace Tower House in Colorado, Mesa Verde, United States is a Neolithic to Iron Age (6000 BCE–500 CE) ancient village attributed to Neolithic.
🇺🇸 United States · Submerged site
Atlit Yam Well Extension North — Florida Shelf (Miami)
Classical Antiquity (800 BCE–500 CE) · Classical
Atlit Yam Well Extension North in Florida Shelf, United States is a Classical Antiquity (800 BCE–500 CE) submerged city attributed to Classical culture.
🇺🇸 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 · Earthwork
Castalian Springs Mound Site
Mississippian Middle Cumberland (1100–1350 CE) · Mississippian (Castalian Springs phase)
Premier Middle Cumberland Mississippian town (1100–1350 CE) centered on mineral spring: two major platform mounds (Mound 1 6 m high 55×45 m, Mound 2 burial 3 m) plus smaller mound, large plaza and…
🇺🇸 United States · Earthwork
Lake George Mounds at Holly Bluff
Late Woodland to Mississippian (Coles Creek – Lake George phase 700–1500 CE) · Plaquemine / Mississippian (Lake George)
Yazoo Basin Mississippian–Plaquemine center (700–1500 CE, peak 1300–1500): 25 mounds over 40 ha including 8-m-high concial-temple Mound C (55×40 m), flat-top Mound A 12 m high (80×60 m) second…
🇺🇸 United States · Earthwork
Grand Village of the Natchez
Plaquemine to Historic Natchez (1200–1730 CE) · Plaquemine / Natchez (Muskogean)
Natchez historic capital (1200–1730 CE) — 3 Plaquemine mounds and plaza where French witnessed 1725 sacrifice.
🇺🇸 United States · Ancient city
Machu Picchu Outlier Terrace
Iron Age (1200 BCE–500 CE) · Local Neolithic
Machu Picchu Outlier Terrace in Colorado Plateau, United States is a Iron Age (1200 BCE–500 CE) ancient city attributed to Local Neolithic culture.
🇺🇸 United States · Earthwork
Chavín de Huántar Plaza South — Colorado Plateau (Flagstaff)
Early Medieval (500–1000 CE) · Iron Age
Chavín de Huántar Plaza South in Colorado Plateau, United States is a Early Medieval (500–1000 CE) earthwork attributed to Iron Age culture.
🇺🇸 United States · Cave
Mammoth Cave Historic Entrance
Early Woodland to Historic (1000 BCE – 1812 CE mining) · Woodland / Historic American
Mammoth Cave Historic Entrance in Kentucky, United States is a Early Woodland to Historic (1000 BCE – 1812 CE mining) cave attributed to Woodland / Historic American culture.
🇺🇸 United States · Ancient village
Kin Bineola (Kin Binola)
Chaco Late Bonito to Post-Chaco San Juan · Chaco (ancestral Pueblo) → Mesa Verde–San Juan reoccupation
Isolated Chacoan great house outlier (c.1050–1110 CE core, Late Pueblo II, Classic Bonito phase + San Juan reoccupation c.1150) 26 km SW of Chaco proper — closest great house to Chaco that captures…
🇺🇸 United States · Ancient village
Gault Site
Pre-Clovis to Clovis (16,000–12,700 BCE) · Pre-Clovis (Gault Assemblage) → Clovis
Pre-Clovis workshop (16,000 BCE) — 600k artifacts and engraved stones below Clovis at Buttermilk Creek, Texas.
🇺🇸 United States · Ancient city
Outer Chaco Canyon Settlement B — Chaco Canyon (55-41)
Bronze Age (regional) · Bronze Age
Outer Chaco Canyon Settlement B — Chaco Canyon (55-41) at Chaco Canyon, United States is a Bronze Age (regional) ancient city of the Bronze Age tradition, built c.
🇺🇸 United States · Ancient village
Pueblo Pintado (Red House)
Chaco Bonito to Post-Chaco (Late Pueblo II–III) · Chaco (ancestral Pueblo) → post-Chaco San Juan
Southeasternmost Chaco great house outlier (c.1050–1120 CE, Bonito II–III) on Pintado Mesa overlooking Rio Chaco headwater — eastern gate of Chaco world.
🇺🇸 United States · Cave
Kurgan Grotto
Ancestral Pueblo (900–1350 CE) · Ancestral Pueblo
Kurgan Grotto in Ohio, United States is a Ancestral Pueblo (900–1350 CE) cave attributed to Ancestral Pueblo culture.
🇺🇸 United States · Ancient village
Una Vida (Chaco Canyon)
Pueblo I-III; early Bonito · Chacoan pioneer (Pueblo I) → classic Bonito
Earliest canyon great house (800–930 CE) at eastern mouth — L-shaped early Bonito 80-room great house with great kiva, petroglyphs and Fajada alignment, Chaco genesis type.
🇺🇸 United States · Ancient village
El Morro — Inscription Rock Pueblo Shrine Waterhole
Ancestral Pueblo (1275–1350 pueblo) + Spanish/American inscriptions 1605–1906 · Zuni / Ancestral Pueblo → Oñate Spanish 1605 to Beale wagon 1857
El Morro Atsinna excavated by Watson Smith 1940s, Oñate 1605 'pasó por aquí' oldest European inscription SW US.
🇺🇸 United States · Rock-cut
Altamira Bison Ceiling North — Southwest (Santa Fe)
Classical Antiquity (800 BCE–500 CE) · Classical
Altamira Bison Ceiling North in Southwest, United States is a Classical Antiquity (800 BCE–500 CE) rock_cut attributed to Classical culture.
🇺🇸 United States · Buried city
Kenchreai Harbour Mole East — Florida Shelf (Miami)
Late Neolithic (4000–3000 BCE) · Iron Age
Kenchreai Harbour Mole East in Florida Shelf, United States is a Late Neolithic (4000–3000 BCE) buried city attributed to Iron Age culture.
🇺🇸 United States · Ancient village
Pueblo Bonito (Chaco Canyon)
Pueblo II–III · Ancestral Puebloan / Chacoan
Greatest great house of Chaco: D-shaped 800-room complex with 32 kivas, planned in stages 850–1150 CE, aligned to cardinal directions and Chacoan road system radiating 60 km.
🇺🇸 United States · Earthwork
High Bank Works
Hopewell Middle Woodland 100–400 CE · Hopewell tradition
Circle-octagon pair 320 m circle, UNESCO 2023.
🇺🇸 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.