Claim: In regard to Castles of Sardinia, most were built during the Giudicati period and the della Gherardesca, Malaspina and Doria domination, but with the unification of Sardinia under the Aragonese, their importance faded away and over time almost all of them went into ruin.
Evidence: Some date back to the Byzantine period, but most of them were built during the Giudicati period and the della Gherardesca, Malaspina and Doria domination, especially from the second half of the 13th century onwards. With the unification of Sardinia under the Aragonese their importance faded away and over time almost all of them went into ruin.