Gateway Arch National Park is located in St. Louis, Missouri, and features the iconic Gateway Arch, which stands at 630 feet tall. The park commemorates the westward expansion of the United States and serves as a symbol of the city’s role in this historic movement. Visitors can explore the park's grounds, which include walking paths and green spaces. The park also houses the Museum at the Gateway Arch, where guests can learn about the history of the arch and the significance of westward expansion. The park is a popular destination for tourists and locals alike, offering stunning views and educational experiences.