Castel Nuovo, or Maschio Angioino, as it is known locally, reflects the various rulers of Naples.

It was built in 1279–82 by Charles I of Anjou and expanded by Alfonso I of Aragon, who added a Triumphal Arch between 1453 and 1467 to celebrate his victorious entry into the city. The hall is now used for events and expositions, but it can still be seen at times.

Also open are the southern courtyard, the Charles V Hall, and the Sala della Loggia.