Aerial view of the top of a tall metal arch hovering over the St. Louis downtown

Gateway Arch National Park (formerly Jefferson National Expansion Memorial) commemorates St. Louis' role in the westward expansion of the United States during the nineteenth century. The new visitor center galleries were part of a major renovation to the Jefferson National Expansion Memorial, now Gateway Arch National Park, grounds in downtown St. Louis, MO. The visitor center features accessible, interactive, and engaging exhibits that interpret individuals and cultural groups involved in exploring, exploiting, and inhabiting the lands from the Mississippi River to the Pacific Ocean.