Castelo do Engady in Caicó, Rio Grande do Norte, is a Moorish-medieval castle constructed in 1974 by Monsignor Antenor Salvino de Araújo as a place of seclusion, study, meditation, and prayer. Built on a rocky outcrop and spanning 51,000 square meters, the castle features elaborate architecture including courtyards, terraces, parapets, balconies, turrets, towers, bridges, stairs, wells, fortifications, and battlements, furnished with detailed rustic artifacts from the era of the Crusades mixed with regional sertanejo elements. Named after the biblical spring of Engady where King David found refuge, the castle experienced two decades of prominence as a regional tourist attraction before entering abandonment, yet remains architecturally significant as a representation of religious vision and craftsmanship in Brazil's interior.