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★ National Historic Landmark

Serpent Mound

Also known as Great Serpent Mound State Memorial

One of 73 National Historic Landmarks in Ohiothe highest tier of the National Register
Listed 1966Bratton Township
DirectionsAdd an old photo

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About

About Serpent Mound

Serpent Mound was added to the National Register of Historic Places on Oct 15, 1966. It was named a National Historic Landmark on Jul 19, 1964, one of 73 in Ohio. The Register lists it for its prehistoric, at the national level. The listing covers 60 acres.

What it isPrehistoric effigy mound in Ohio, United States. From Wikidata (CC0). Read about it on Wikipedia ↗

PDFRead the original nominationThe form that put it on the Register, with its history, photos and a map · 104 MB · National Archives↗
Through the years

1964 to today

  1. 1964Named a National Historic Landmark
  2. 1966Added to the National Register of Historic Places
  3. 2026On the Register for 60 years
Visit

Finding Serpent Mound

5 miles northwest of Locust Grove on OH 73, in Bratton Township, OH

Directions

No other Register listing is within a short walk.

Memories of Serpent Mound

The record says what it is. Neighbors know what it means.

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Questions about Serpent Mound

Is Serpent Mound on the National Register of Historic Places?

Yes. It was added on Oct 15, 1966 (Register number 66000602).

Is Serpent Mound a National Historic Landmark?

Yes, since Jul 19, 1964. Ohio has 73 National Historic Landmarks.

Can you visit Serpent Mound?

Yes: it is open to visitors. Check opening times before you go.

Where can I read the history of Serpent Mound?

In its National Register nomination, the form that put it on the Register: a 104 MB PDF at the National Archives, linked on this page.

Sources: National Park Service, National Register of Historic Places (05/22/2026) · National Archives catalog record 71986437 · Wikidata. Map tiles © OpenStreetMap contributors.