Adjoining the lower church is a small museum, which displays exhibits relating to the life of the saint.

When Bishop Neumann died suddenly in 1860 he was buried, as requested, at St. Peter's Church beneath the undercroft floor directly below the high altar.

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.

In 1989, during the course of a major renovation of the shrine, the body of the saint was clothed in a set of modern vestments cut in the Gothic style.

[6] Media related to St. Peter the Apostle Church - National Shrine of St. John Neumann at Wikimedia Commons