Erected between 1886 and 1892 under the supervision of Gothic Revivalist Alfredo D'Andrade, the castle is located on the site of a 13th-century fortified area, which had been reinforced in the 16th century.

The museum includes ethnographic and archaeological findings collected by both Enrico and Luigi Maria d'Albertis during their trips to Africa, America (from Canada to Tierra del Fuego), New Guinea and Oceania.

There is a large number of weapons from Sudan and the Zambesi area Chinese spears and European halberds.

There are several exemplars of Canadian and American plains indigenous people, made in buffalo and deer leather and covered by porcupine thorns; also findings belonging to the Maya civilization from Honduras are present.

It also exhibits models of ships and yachts, nautical instruments, photographs and the volumes of d'Albertis personal library.