Ohio is live on Travelog with one city, Chillicothe, home to the Hopewell Ceremonial Earthworks, inscribed by UNESCO on September 19, 2023, as the United States' 25th World Heritage Site, under criteria (i) and (iii). The eight monumental earthwork complexes were built 1,600 to 2,000 years ago and include precise geometric alignments with the sun and moon's cycles. Mound City Group, the only fully restored site and home to the visitor center, is free to enter, open daily 9am-4pm.
The Hopewell Ceremonial Earthworks' astronomical precision, aligned with both solar and complex lunar cycles built by a culture without written records, is worth understanding as genuine engineering achievement, covered in full below.
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