Newark Earthworks
12 Country Club Dr, Newark, OH
Newark, OH
The largest set of ancient geometric earthworks anywhere on Earth, a two-thousand-year-old observatory of earth aligned to the cycles of the moon.
The Newark Earthworks are the largest set of geometric earthworks anywhere in the world, an astonishing complex of walls, circles, and an octagon built by hand some two thousand years ago by the Hopewell people. Once the works sprawled across several square miles of the Licking River valley in central Ohio, and even the surviving pieces, the Great Circle and the Octagon, are so large that a person standing inside them can hardly take in their full extent.
These are not random mounds but precise geometric monuments, and modern study has revealed that the Octagon is aligned to the complex eighteen-and-a-half-year cycle of the rising moon, functioning as a kind of vast observatory in earth. In 2023 the Newark Earthworks were inscribed, along with other Ohio sites, as a World Heritage Site, recognizing them as one of the great achievements of the ancient world and of Indigenous North America.
What Travelers Love
- Standing within the vast Great Circle, one of the largest ancient enclosures anywhere
- The Octagon Earthworks, precisely aligned to the long cycle of the rising moon
- The staggering scale and geometry of works built entirely by hand
- A World Heritage Site of Indigenous achievement hidden within an Ohio city
Worth Knowing
- The earthworks are sacred and fragile, so stay on paths and do not climb the walls
- Access to parts of the Octagon can vary, so check before planning a close visit
- The grounds are open and grassy, so bring sun protection and good walking shoes
- The nearby interpretive resources help make sense of what you are seeing
Learn about Newark Earthworks
The people who built them
The Newark Earthworks were raised by people archaeologists call the Hopewell, a name for a widespread ancient way of life rather than a single tribe. They were the ancestors of Native American peoples, part of the continuous human story of the Ohio country, which is the ancestral homeland of the Shawnee, Miami, Lenape (Delaware), Wyandot, and other nations. Those nations were forcibly removed from Ohio in the 1800s, and their descendant communities continue today, largely in Oklahoma, and remain connected to these sacred places.
The Hopewell of the Scioto and Licking valleys were at the center of a trade and ceremonial network that reached across the continent, drawing materials like copper, mica, obsidian, and seashell from thousands of miles away. Great earthwork centers like Newark were gathering places, likely drawing people from across the region for ceremony, exchange, and the marking of important astronomical and ritual events.
Geometry written in earth
The scale and precision of the Newark Earthworks are what stun visitors and scholars alike. The Great Circle is an enormous ring of earthen wall enclosing a huge open space, its bank rising well above head height in places, all of it heaped up basket by basket without metal tools, wheels, or draft animals. The Octagon, connected to a large circle, encloses ground vast enough to contain many football fields.
Even more remarkable is the mathematics embedded in the works. The circles and the octagon share consistent units of measure and geometric relationships, evidence of careful planning and a shared body of knowledge. The builders laid out these giant forms across the landscape with an accuracy that speaks to sophisticated surveying and design, achievements that overturn old assumptions about the ancient peoples of North America.
An observatory aligned to the moon
Perhaps the most extraordinary discovery about the Newark Earthworks concerns the Octagon. Researchers found that its walls and openings are aligned to the points on the horizon where the moon rises and sets across its long, complex cycle, a pattern that takes over eighteen years to complete before repeating. Tracking that cycle requires generations of patient observation, and the Octagon appears to encode that knowledge in earth.
This makes the site a monumental astronomical instrument as well as a ceremonial center, a place where the movements of the sky were observed, honored, and built into the landscape itself. That an ancient people could measure and memorialize so subtle a celestial rhythm, and do so on such a colossal scale, is a large part of why these earthworks are counted among the wonders of the ancient world.
Survival, World Heritage, and visiting today
As Newark grew, much of the ancient complex was plowed, built over, or lost, and for many years part of the Octagon lay within a private golf course, a source of long controversy. Yet key pieces survived, protected as public sites, and in 2023 the Newark Earthworks joined seven other Ohio sites as the Hopewell Ceremonial Earthworks World Heritage Site, the first such site in the state, with growing efforts to open the grounds more fully to the public.
Today visitors can walk within the Great Circle and view the Octagon, standing where people gathered two thousand years ago. Because these are sacred places and places of burial and ceremony, guests are asked to treat them with care and respect. Interpretive resources nearby help make sense of the geometry and astronomy, turning what might look like grassy ridges into a window onto a brilliant ancient civilization.
Closest Boutels
The closest Boutel™ stays, so you can turn this stop into an overnight. Each is a place we chose through independent editorial review, never a paid placement.
The Roscoe Boutique Motel
Honorable Mention421 S Whitewoman St, Coshocton, OH
34 miles away|Learn More ›
Details
Newark, OH
Frequently asked questions
What are the Newark Earthworks?
The Newark Earthworks, in Newark, Ohio, are the remains of the largest set of geometric earthen enclosures in the world, monumental earthworks built by the ancient Hopewell culture around two thousand years ago, and part of a designated World Heritage Site. These vast and precisely built earthen walls, mounds, and enclosures, including the remarkable Great Circle and the Octagon, were created by Native peoples with astonishing skill, aligned to the movements of the moon and used for ceremonies and gatherings. They are among the greatest achievements of ancient North America and a place of deep significance and reverence. A monumental and sacred ancient site, it awes and moves visitors. With its ancient earthworks, the site offers a compelling destination in Ohio.
Who built the Newark Earthworks and why?
The Newark Earthworks were built by the ancient Hopewell culture, Native peoples who lived in the region around two thousand years ago and created monumental earthen enclosures with remarkable engineering and astronomical precision. These vast earthworks were used for ceremonies, gatherings, and sacred purposes, and some, like the Octagon, are aligned with the complex cycles of the moon, reflecting deep knowledge and spiritual meaning. They are a testament to the sophistication of these ancient peoples and remain significant to Native peoples today. Understanding this heritage deepens a visit to the Newark Earthworks in Ohio.
How should visitors approach the Newark Earthworks?
Because the Newark Earthworks are an ancient, sacred site of profound significance to Native peoples and a World Heritage Site, visitors should approach them with respect and reverence, staying on designated paths, not climbing on or disturbing the earthworks, and treating the site as the monumental and sacred place it is. Appreciating the skill and spiritual meaning behind these ancient works honors the peoples who built them and their descendants. Approaching the earthworks with respect ensures a meaningful visit to the Newark Earthworks in Ohio.
When is the best time to visit the Newark Earthworks?
The mild months of spring through fall are the most pleasant for visiting the outdoor earthworks, with comfortable weather for walking the grounds and appreciating their scale, while access to some portions, such as the Octagon, may vary, so checking current access before you go is important. Interpretive information enhances a visit in any season. For the most pleasant visit and fullest access, aim for the mild months and check current access at the Newark Earthworks in Ohio.
What is near the Newark Earthworks?
The Newark Earthworks are in Newark, Ohio, within reach of Newark, the routes toward Columbus to the west, and the Hopewell Culture National Historical Park near Chillicothe to the south, part of the same World Heritage Site. That makes the Newark Earthworks a compelling stop to combine with the Hopewell Culture National Historical Park and the other attractions of central Ohio on a visit to the state.
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