🇺🇸 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 · Megalith
Bighorn Medicine Wheel
Late Prehistoric 1200–1700 CE · Plains Indians
24 m medicine wheel 28 spokes, solstice alignments.
🇺🇸 United States · Earthwork
Aztalan State Park
Mississippian 1000–1250 CE · Mississippian (Cahokian)
Northernmost Mississippian walled town 1000–1250 CE.
🇺🇸 United States · Earthwork
Wickliffe Mounds State Historic Site
Mississippian 1000–1350 CE · Mississippian (Wickliffe phase)
Eight-mound Mississippian town 1000–1350 CE.
🇺🇸 United States · Earthwork
Crystal River Archaeological State Park
Deptford–Hopewell–Weeden Island 500 BCE–1000 CE · Deptford / Hopewell Gulf Coast
Six mounds 500 BCE–1000 CE with Hopewell copper and stelae.
🇺🇸 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
Marksville State Historic Site
Marksville 0–400 CE · Marksville culture
Semicircular enclosure 530 m wall, Marksville Southern Hopewell 0–400 CE.
🇺🇸 United States · Archaeological wonder
Chimney Rock National Monument
Pueblo II 1076–1125 CE · Chacoan
Chacoan Great House at 2310 m, lunar standstill alignment 1076–1093 CE.
🇺🇸 United States · Archaeological wonder
Gila Cliff Dwellings National Monument
Mogollon Tularosa 1275–1300 CE · Mogollon
46 rooms in five caves 1275–1300 CE, Mogollon.