It was created to enhance the "postal culture" of Friuli-Venezia Giulia and the neighbouring countries of Central Europe.

Inside the museum there is a brief reference to Guglielmo Marconi and his laboratory ship "Elettra", with historic material exhibited in the main hall. There are panels illustrating the history and characteristics of the Post Office building, a reconstruction of a vintage post office, and various historical items.

These include postal artefacts such as forms and documents from the Austrian era to modern times, telegraphic equipment, old maps and charts identifying the mail routes of Central Europe, stamps.