The Lewis and Clark State Historic Site commemorates Camp Dubois, the 1803-1804 winter camp of Meriwether Lewis and William Clark. It was at Camp Dubois that members of the Corps of Discovery prepared for their expedition to the Pacific Ocean. Exhibits are kid-friendly, offering opportunities for hands-on engagement. A "reconstruction" of the winter camp, Camp Dubois, is located on the grounds near the visitor center. Its design reflects 1803 U.S. Army regulations for the construction of military posts. Interpreters are on-site daily in the camp to explain how the men prepared for the journey.