The Spanish Inquisition tribunal in Sicily was housed in Palermo after its establishment there in 1513.
Palermo was the capital of the Kingdom of Sicily and the island’s principal political and administrative center, making it a natural base for a tribunal connected to the Spanish monarchy. Ferdinand II of Aragon established the Sicilian tribunal as part of the wider Spanish Inquisition network, which also operated in territories such as Castile, Aragon, Sardinia, and later parts of the Americas.
The tribunal dealt with suspected heresy and religious nonconformity, including cases involving converts of Jewish or Muslim background, Protestants, and other alleged offenses against Catholic orthodoxy. Its reach extended beyond the city, but Palermo remained its institutional headquarters.
The distractors reflect a common geographical confusion. Naples was an important Spanish-controlled Italian kingdom but did not receive a Spanish Inquisition tribunal of this kind. Cagliari belonged to Sardinia, which had its own tribunal, while Messina was another Sicilian city rather than the tribunal’s central seat. The Sicilian Inquisition ultimately survived until its abolition in 1782.