- Research Article
- 10.1558/jia.27713
The Islamic Watchtower of Murta (Alcácer do Sal)
- Mar 10, 2026
- Journal of Islamic Archaeology
- Marta Isabel Caetano Leitão
The present article aims to present the results of archaeological interventions carried out at the Islamic Watchtower of Murta in 2020 and 2022, within the context of the research conducted for the author’s doctoral dissertation: “A Organização do Território no Sudoeste do Ġharb Al-Andalus—povoamento rural e paisagens fortificadas na kūra de Alcácer do Sal” (SFRH/BD/117606/2016; COVID/BD/151702/2021), under the scientific guidance of Professor Dr. Rosa Varela Gomes. The archaeological site, where there is currently a mill from the Medieval and Modern times, built upon the remains of a previous structure, is situated on a high hill, near the Sado River. From it a wide visual range over the river and the Atlantic Ocean is obtained, as well as the Arrábida Mountain Range and the Castles of Alcácer and Palmela, former fortifications erected during the Emirate of Córdoba. During the 9th century, the western region of Al-Andalus, where Alcácer is located, was targeted by Viking attacks, which persisted throughout the subsequent centuries, compelling the Umayyad power of Córdoba, under the rule of ᶜAbd al-Raḥmān II, to invest in the defense of these coastal areas by installing a network of watchtowers and ribats for their protection. Taking into account these events that marked the territory under study, and the strategic importance of that site in the communication between two important fortifications, such as the Castles of Alcácer and Palmela, archaeological excavations were carried out on the site with the aim of verifying the typology and chronology of the structure that lay beneath the current mill. The work carried out allowed the foundations of the tower that previously stood there to be uncovered (possessing a circular plan, with a diameter of 8 m), and the study of the collected materials made it possible to confirm an Islamic occupation between the 8th/9th and 13th centuries.
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