The Jefferson Barracks Ordnance Museum is a technical museum showing the evolution of United States ammunition from around 1900 to the present day.
The museum highlights ordnance from all branches of the military — powder canisters, grenades, shells, missiles, torpedoes and bombs.
| Saturday | 11:00 am — 3:00 pm |
| Sunday | 11:00 am — 3:00 pm |