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Aztalan, Wisconsin is a small town located in Jefferson County, known for its rich history and archaeological significance. The town is home to the Aztalan State Park, which preserves an ancient Native American settlement that dates back to around 1000-1300 AD. This settlement is believed to have been inhabited by the Mississippian culture, who built large earthen mounds and a stockade around the village.

One unique fact about Aztalan is that it is the site of the northernmost known pyramid in North America. The pyramid, known as the Aztalan Mound, stands at 20 feet tall and is thought to have been used for ceremonial purposes by the ancient inhabitants of the village. The Aztalan Mound is one of the best-preserved examples of Mississippian architecture in the Midwest.

Another interesting fact about Aztalan is that it was designated a National Historic Landmark in 1964, recognizing its importance as a cultural and archaeological site. Visitors to Aztalan State Park can explore the ancient mounds, walk along the stockade wall, and learn about the history of the Mississippian people who once called this area home.