The Museum has three main rooms: - the former Sacristy “dels Vermells”

- the former Gothic Chapter house

- the Baroque Chapter house

In the first room, from the early fourteenth century, you can see, for example:

- the portable alter for King James 1, a diptych, made from wood and silver in the middle of the thirteenth century

- Rommonin pair, silverwork from the fourteenth century, from the Cammearata Synagogue(Sicily), and sold to some traders by the Chapter of canons.

In the second room, the Gothic room, attributed to Guillem Sagrera, with its trapezoid-shaped floor, and ribbed vault, you can see, amongst many other things:

- the sepulchre, in the middle, of Gil Sancho Muñoz, successor to Benedict XIII, the Papa Luna, who gave up his papacy, and was then appointed as bishop of Mallorca,

- the Altarpiece of Saint Sebastián, the patron of Palma, made by Alonso de Sedano.

In the third room, the Baroque room, created in 1696, heavily decorated with floral designs, with an elliptical floor, extremely valuable works such as the below are kept:

- the Reliquary of the True Cross, from the fifteenth century

- the sculpture-reliquary of saint Vincente Ferrer, made from silver, from 1596.

Many other works of particular value can be admired in the Museo Capitular (Chapterhouse Museum), like the seven-armed, silver candelabras by Joan Matons, from the early eighteenth century or the Custodia mayor (Custodia Major) from 1585.

Also, in the Cloisters built in 1707, in the former orchard, a large variety of ancient works belonging to the Cathedral can be seen on the walls of the corridors.