Realized in 1819 on the hill Miradois, in the zone of Capodimonte, the construction of the observatorium, that had the consultancy of F.Zuccari and G.Pazzi, was built under the government of Ferdinando I of Borbone to promote the scientific activities in the city; such worth is recognized him by a dedication that can be read on the pediment of the building.

The façade of the building is characterized by a neoclassic pronao and by windows and semi circular openings while the original structure had two wings covered with two silvered domes. With the amplification during our century two brief bodies have been added. On a large semicircular balcony there are three domes and the tools of observation. From the balcony is possible to admire besides a spectacular panorama of the city. This splendid position increases the charm of the building.