Aztalan State Park

Aztalan
Steps on the eastern face of the largest platform mound, Aztalan State Park
LocationNear Lake Mills on WI 89, Jefferson County, Wisconsin
Nearest cityLake Mills, Wisconsin
Coordinates43°03′56″N 88°51′46″W / 43.065556°N 88.862884°W / 43.065556; -88.862884
NRHP reference No.66000022
Significant dates
Added to NRHPOctober 15, 1966
Designated NHLJuly 19, 1964

Aztalan State Park is a state park in Jefferson County, Wisconsin, United States. Established in 1952, it was designated a National Historic Landmark in 1964 and added to the National Register of Historic Places in 1966. The park covers 172 acres (70 ha) along the Crawfish River.

Aztalan is the site of an ancient Mississippian culture settlement that flourished during the 10th to 13th centuries. The indigenous people constructed massive earthwork mounds for religious and political purposes. They were part of a widespread culture with important settlements throughout the Mississippi River valley and its tributaries. Their trading network extended from the Great Lakes to the Gulf Coast, and into the Southeast of the present-day United States.