In the museum located in the basement of the Field Cathedral of the Polish Army, one can learn about the history of military chaplaincy, starting from the Baptism of Poland until modern times. Visitors can watch multimedia presentations on the history of the cathedral and chaplains. Exhibits of artistic craftsmanship dating back to the mid-seventeenth century, field altars, uniforms, liturgical paraphernalia used by military chaplains, as well as documents and photographs are worthy of note.