Pope Paul VI beatified Neumann during the Second Vatican Council and declared him a saint in 1977. The undercroft at St. Peter the Apostle Church underwent several renovations after Neumann's initial interment. The space served for years as the lower church of St. Peter the Apostle parish and eventually became the "National Shrine of Saint John Neumann" after his canonization. The body of the saint lies in a glass-enclosed reliquary under the main altar. It is dressed in the episcopal vestments with a mask covering the face.