From the cloister can be reached:
the burial chapel of the Migliorati (12th century);
the Antiquarium, in which are found tomb slabs, decorative fragments of the mosaic pavement of the early church (11th and 12th centuries), pieces of capitals, and architectonic fragments of the cloister.

The corridor exits into the "vaults", an underground area proceeding under the transept of the cathedral, used from 1326 to the end of the 18th century for burials from which remain various coats of arms (in stone and painted) and burial insignia.

Contiguous with the "vaults" is the chapel of Saint Stephen (beginning of the 15th century), containing painted murals: 
on the vaults: evangelists and saints (beginning of the 15th century), frescoes, by an anonymous Tuscan painter;
in the lunettes: The Stoning of Saint Stephen and The Madonna with Saint Stephen and Saint Lorenzo (c.1420), monochrome frescoes, by Pietro and Antonio di Miniato.

Also in the chapel are preserved important relics of the cathedral:
Reliquary of the torso of Saint Anne (1490), in silver, made by Antonio di Salvi;
Reliquary of the holy cross (1590), by Egidio Leggi;
Reliquiario of Saint Stephen (XIX secolo), realizzato su disegno di Alessandro Franchi.
From the cloister can be reached:
the burial chapel of the Migliorati (12th century);
the Antiquarium, in which are found tomb slabs, decorative fragments of the mosaic pavement of the early church (11th and 12th centuries), pieces of capitals, and architectonic fragments of the cloister.
The corridor exits into the "vaults", an underground area proceeding under the transept of the cathedral, used from 1326 to the end of the 18th century for burials from which remain various coats of arms (in stone and painted) and burial insignia.
Contiguous with the "vaults" is the chapel of Saint Stephen (beginning of the 15th century), containing painted murals: 
on the vaults: evangelists and saints (beginning of the 15th century), frescoes, by an anonymous Tuscan painter;
in the lunettes: The Stoning of Saint Stephen and The Madonna with Saint Stephen and Saint Lorenzo (c.1420), monochrome frescoes, by Pietro and Antonio di Miniato.
Also in the chapel are preserved important relics of the cathedral:
Reliquary of the torso of Saint Anne (1490), in silver, made by Antonio di Salvi;
Reliquary of the holy cross (1590), by Egidio Leggi;
Reliquiario of Saint Stephen (XIX secolo), realizzato su disegno di Alessandro Franchi.
Prato Cathedral Museum