The interior is united by a Renaissance aesthetic. The majiolica frieze and tondos are by the artist Andrea della Robbia, and the church's stained glass windows were executed following a design by Domenico Ghirlandaio. An elegant marble balustrade by the sculptor/architect Buontalenti separates the western arm of the cross, and a magnificent white marble edicola designed by Sangallo, and inspired by those found in the Pantheon can be seen at the end of this arm. The ancient prison area can be found underneath the Sacristy.
Source: Prato APT