Amid much public excitement, American explorers Meriwether Lewis and William Clark return to St. Louis, Missouri, from the first recorded overland journey from the Mississippi River to the Pacific coast and back. The Lewis and Clark Expedition had set off more than two years before to explore the territory of the Louisiana Purchase.
Even before the U.S. government concluded purchase negotiations with France, President Thomas Jefferson commissioned his private secretary Meriwether Lewis and William Clark, an army captain, to lead an expedition into what is now the U.S. Northwest. On May 14, the "Corps of Discovery," featuring 28 men and one woman—a Native American named Sacagawea—left St. Louis for the American interior.
just across the river from St. Louis is a nice museum & park, Camp River Dubois (Camp Wood) to commemorate the area where Lewis & Clark prepared for the expedition. Also nearby is St. Charles where they stopped & Lewis joined up with the group before they left on their little trip.