Hopewell Culture National Historical Park is located in southern Ohio and preserves the earthworks built by the Hopewell culture, which thrived from around 200 BCE to 500 CE. The park features large mounds and geometric earthworks that served ceremonial and burial purposes, showcasing the advanced engineering and social organization of the Hopewell people. Visitors to the park can explore several sites, including the Mound City Group, which contains some of the most impressive earthworks. The park offers educational programs and trails, allowing guests to learn about the rich history and cultural significance of the Hopewell civilization.