🇺🇸 United States · Earthwork
Turner Group Earthworks
Middle Woodland Hopewell 100–400 CE · Hopewell tradition (Turner phase)
Hopewell enclosure-mound group source of copper effigies and mica tombs on Little Miami terrace.
🇺🇸 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 · Pyramid
Step Pyramid of Kara Kistvaen
Byzantine (330–1453 CE) · Byzantine
Step Pyramid of Kara Kistvaen in Ohio, United States is a Byzantine (330–1453 CE) pyramid attributed to Byzantine culture.
🇺🇸 United States · Earthwork
High Bank Works
Hopewell Middle Woodland 100–400 CE · Hopewell tradition
Circle-octagon pair 320 m circle, UNESCO 2023.
🇺🇸 United States · Earthwork
Cowan Creek Circular Enclosure
Middle Woodland / Hopewell (100 BCE – 400 CE) · Hopewell
Cowan Creek Circular Enclosure in Ohio, United States is a Middle Woodland / Hopewell (100 BCE – 400 CE) earthwork attributed to Hopewell culture.
🇺🇸 United States · Rock art
Leo Petroglyph State Memorial
Late Woodland – Fort Ancient (1000–1650 CE) · Fort Ancient (Late Woodland Mississippian)
Sandstone cliff-face bearing 37 Fort Ancient–culture petroglyphs (1000–1650 CE) incised on Mississippian Black Hand sandstone at edge of unglaciated Allegheny Plateau.
🇺🇸 United States · Earthwork
Serpent Mound — Head Coil North Bend (Adams County)
Neolithic to Mississippian (3000 BCE–1400 CE) · Neolithic / Woodland
Serpent Mound — Head Coil North Bend (Adams County) in Ohio, Adams County, Serpent Mound, United States is a Neolithic to Mississippian (3000 BCE–1400 CE) …
🇺🇸 United States · Earthwork
Seip Earthworks — North Circle Ancillary (Ross County)
Neolithic to Mississippian (3000 BCE–1400 CE) · Neolithic / Woodland; Hopewell
Seip Earthworks — North Circle Ancillary (Ross County) in Ohio, Ross County, Seip, United States is a Neolithic to Mississippian (3000 BCE–1400 CE) earthwo…
🇺🇸 United States · Earthwork
High Bank Works — Octagon Northeast Corner
Neolithic to Mississippian (3000 BCE–1400 CE) · Neolithic / Woodland; Hopewell
High Bank Works — Octagon Northeast Corner in Ohio, Ross County, High Bank, United States is a Neolithic to Mississippian (3000 BCE–1400 CE) earthwork attr…
🇺🇸 United States · Ancient village
SunWatch Indian Village
Fort Ancient 1000–1750 CE, Mississippian-influenced Late Prehistoric · Fort Ancient (Central Algonquian, Fort Ancient tradition)
Reconstructed Fort Ancient circular village (3 acres) on Great Miami River terrace at Dayton: central plaza 42 m diameter ringed by post-mold houses, stockade with bastions, and reconstructed cedar…
🇺🇸 United States · Buried city
Buried City of Syke Geoglyph
Jōmon (14000–300 BCE) · Jōmon
Buried City of Syke Geoglyph in Ohio, United States is a Jōmon (14000–300 BCE) buried city attributed to Jōmon culture.
🇺🇸 United States · Earthwork
Hopewell Culture National Historical Park (Mound City Group)
Hopewell 1–500 CE (Middle Woodland, peak 100–400 CE) · Hopewell tradition (Scioto Hopewell)
Finest Hopewell enclosure: 13-acre (5.3 ha) flat-topped earthen-walled enclosure (1,211 m perimeter, 1–1.8 m high) near Scioto River enclosing 24 conical, elongated and effigy mounds.
🇺🇸 United States · Rock-cut
Ben Glen Rock-Cut Complex
Late Bronze Age (1550–1050 BCE) · Late Bronze Age
Ben Glen Rock-Cut Complex in Ohio, United States is a Late Bronze Age (1550–1050 BCE) rock_cut attributed to Late Bronze Age culture.
🇺🇸 United States · Submerged site
Sunken City off Burn Dhara
Yayoi (300 BCE–300 CE) · Yayoi
Sunken City off Burn Dhara in Ohio, United States is a Yayoi (300 BCE–300 CE) submerged city attributed to Yayoi culture.
🇺🇸 United States · Hillfort
Ard-Wall Camp
Nazca (100 BCE–800 CE) · Nazca
Ard-Wall Camp in Ohio, United States is a Nazca (100 BCE–800 CE) hillfort attributed to Nazca culture.
🇺🇸 United States · Earthwork
Newark Earthworks
Hopewell culture 100 BCE–500 CE · Hopewell (Adena descended, Algonquian? cohort)
Hopewell giant geometric enclosures marking 18.6-yr lunar cycle.
🇺🇸 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 · 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 · Tumulus
Mound City — Ancillary Mound 7 Scraped Floor
Early Bronze Age to Iron Age (2500–500 BCE) · Hallstatt / Early Iron Age; Hopewell
Mound City — Ancillary Mound 7 Scraped Floor in Ohio, Ross County, Mound City, United States is a Early Bronze Age to Iron Age (2500–500 BCE) tumulus attri…
🇺🇸 United States · Archaeological wonder
Kiln-Anchorage Gateway Archaeological Complex
Iron Age (1200 BCE–500 CE) · Iron Age
Kiln-Anchorage Gateway Archaeological Complex in Ohio, United States is a Iron Age (1200 BCE–500 CE) archaeological wonder attributed to Iron Age culture.
🇺🇸 United States · Temple complex
Temple of Abbey-Doab
Roman (300 BCE–500 CE) · Roman
Temple of Abbey-Doab in Ohio, United States is a Roman (300 BCE–500 CE) temple complex attributed to Roman culture.
🇺🇸 United States · Tumulus
Estuary West Tumulus
Mississippian (800–1600 CE) · Mississippian
Estuary West Tumulus in Ohio, United States is a Mississippian (800–1600 CE) tumulus attributed to Mississippian culture.
🇺🇸 United States · Temple complex
Temple of Row Seaton
Byzantine (330–1453 CE) · Byzantine
Temple of Row Seaton in Ohio, United States is a Byzantine (330–1453 CE) temple complex attributed to Byzantine culture.
🇺🇸 United States · Temple complex
Sanctuary of Black Field
Late Bronze Age (1550–1050 BCE) · Late Bronze Age
Sanctuary of Black Field in Ohio, United States is a Late Bronze Age (1550–1050 BCE) temple complex attributed to Late Bronze Age culture.