 The "Presidi" encompassed about 300 km2.They were effectively attached to the Kingdom of Naples and changed hands several times with it, resulting in three distinct historical periods.From 1557 to 1707, they were a possession of the Crown of Spain administered by the Spanish Habsburg viceroy of Naples; from 1708 to 1733, a possession of the Austrian Habsburgs administered by their viceroy in Naples; and from 1733 to 1801, a dependency of the Spanish Bourbon kings of Naples.