Museum at the Gateway Arch

The Museum at the Gateway Arch is a free, six-gallery history museum on the lower level of the Visitor Center. It follows more than 200 years of St. Louis and American history, from colonial settlement and Mississippi River commerce to the Arch’s design and construction. If you’re here to see the monument, make time for the museum too: there’s no separate admission ticket or reservation, and the exhibits give the landmark a deeper context.

The galleries are Colonial St. Louis, Jefferson’s Vision, Manifest Destiny, The Riverfront Era, New Frontiers and Building the Arch. For a chronological route, start at Colonial St. Louis on the right just past the giant screens; otherwise, you can wander among them. They’re interactive, so this is more than a quick lobby display.

Colonial St. Louis starts in 1764 and makes room for Indigenous and Creole cultures. Jefferson’s Vision follows the Louisiana Purchase and Lewis and Clark, including the Indigenous people who helped the expedition. In Manifest Destiny, the museum presents the friction among Spanish explorers, Indigenous peoples and American settlers instead of reducing westward expansion to a simple march across the map.

The Riverfront Era shows a Mississippi levee port city of steamboats and businesses, and how commerce changed the riverfront. New Frontiers carries St. Louis into manufacturing, industrialization and the transcontinental railroad. A replica section of the Eads Bridge hangs overhead in the galleries.

A national design competition began in 1947; Eero Saarinen’s 630-foot stainless-steel design was selected the next year. Construction began in 1963, and the Arch was completed on October 28, 1965. The gallery also shows runner-up proposals for the riverfront, so you can see what might have occupied this spot instead. The renovated Visitor Center and museum opened in 2018.

Come through the west entrance on Smith Square, across from the Old Courthouse; the Arch’s north and south legs are exit-only. Everyone passes through airport-style security. The museum follows Visitor Center hours, which shift by season, so check before you travel. There’s no parking at the Arch; Stadium East Garage is roughly a seven-minute walk, and MetroLink stations at 8th & Pine and Laclede’s Landing are about ten minutes away.

The galleries are wheelchair accessible, with tactile models throughout plus audio-described and audio-enhanced tours. The Visitor Center also has public accessible and family restrooms, drinking water and bottle-filling stations, an Arch Cafe and a store. Service animals are allowed; pets aren’t.