Designations
Cahokia Mounds was designated a National Historic Landmark on July 19, 1964, and listed on the National Register of Historic Places on October 15, 1966.
In 1982 UNESCO (the United Nations Educational, Scientific and Cultural Organization) designated Cahokia Mounds State Historic Site as a World Heritage Site. The park protects 2,200 acres (890 ha), and is the center of continuing archaeological research. This is the only such site in Illinois and among only twenty-one World Heritage Sites in the United States. United States Representative Evelyn M. Bowles wrote about the Cahokia Mounds site:
"Through the years my friends and I made occasional Sunday afternoon trips to the Mounds. When I became the State Senator, it afforded me the opportunity to secure funds for the acquisition of additional acreage in which there are smaller Mounds. Many of these have contained additional artifacts." The designation has helped protect the property and attract funds to conduct research on this significant civilization.
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