The National Archeological Museum of Naples includes four floors.
The access to the Museum is on the ground floor; next to the entrance, on the left, there is the area of services: an infopoint, a ticket office, a bookshop, a space devoted to temporary exhibitions and an educational space. The entrance is by the wide hall, on the sides of which there are the Garden of Fountains (Giardino delle Fontane – eastern side) and the Garden of Camellias (Giardino delle Camelie – western side). In addition to the Garden of Fountains, the eastern side also houses the Farnese Collection (Collezione Farnese) mainly consisting of statues. Inside the area devoted to the Farnese Collection, two rooms house the Farnese Gems (Gemme Farnesi). On the western side, besides the services next to the entrance, there are other services placed on the opposite side with respect to the entrance: a cafeteria, a lift, three educational areas and two spaces devoted to temporary exhibitions. Moreover, the Gallery, which overlooks the Garden of Camellias, temporarily houses a large number of sculptural masterpieces coming from different sites of Campania.
By entering the first floor, it is possible to visit, on the western side, the Secret Cabinet (Gabinetto Segreto), where eroticism-themed materials are kept, and the rooms which house some mosaics. On the eastern side, on the contrary, there are the rooms devoted to numismatics. The second floor houses the Hall of the Sundial (Salone della Meridiana); on the eastern side there are the rooms devoted to the frescoes, the Temple of Isis in Pompeii and the model of the town buried by the eruption of Vesuvius. It is also possible to visit the space devoted to the East.
The western side, on the contrary, houses the findings of Prehistoric and Protohistoric eras, Ancient Naples Section, which illustrates the town in Greek and Roman times through the relics found between the 19th and the 20th century, and Villa dei Papiri Collection made up of bronze statues. In the basement, on the eastern side, it is possible to visit the Egyptian Collection and the Collection of Epigraphs.