3. Effigy Mounds National Monument
Effigy Mounds National Monument, located in northeastern Iowa, protects over 200 prehistoric mounds built by Indigenous peoples of the Woodland culture between 600 BCE and 1200 CE. Uniquely, many of these mounds are shaped like animals—such as bears, birds, and snakes—believed to hold spiritual or clan significance.
The mounds served as burial sites and ceremonial centers, reflecting a deep connection to nature and ancestral traditions. Set within the scenic bluffs along the Mississippi River, the monument is sacred to many modern Native American tribes. Today, it offers trails, exhibits, and a respectful space for honoring ancient cultural and spiritual practices.
