National Park Trekkers

National Parks in Missouri

Missouri has one national park: Gateway Arch National Park. Gateway Arch requires a reservation in season.

Fees and rules checked against NPS.gov · Updated October 6, 2026

At a glance

ParkEntryReservationBest time to goHow long to stay
Gateway ArchFree entryRequired in seasonApril to early June and September to October bring mild weather and fewer crowds than hot, busy summer days.Half a day to a full day is enough to see the Arch, the museum and the Old Courthouse.

Nearby parks in other states

See the full list of U.S. national parks · Open the park map · Compare park passes