Diba al Hisn Fortress, Portuguese fort in Dibba Al-Hisn, United Arab Emirates.

Diba al Hisn Fortress is a coastal stronghold built from thick stone walls positioned near the Gulf of Oman. The structure dominated the landscape with defensive positions designed to monitor the sea and surrounding coastal areas.

The fortress appears in Manuel Godinho de Erédia's "O Livro de Plantaforma das Fortalezas da Índia" around 1620, which records a Portuguese fort at Doba on the Gulf of Oman. The surviving structure shows a later layout: an inner stone enclosure about 15 metres long with round corner bastions and a central stone tower protecting a well, all surrounded by a square adobe wall roughly 55 metres on each side.

Manuel Godinho de Erédia included the fort in his "O Livro de Plantaforma das Fortalezas da Índia" around 1620, recording a quadrangular plan with circular bastions at the corners. The inner walls were of stone, about 15 metres long, and a stone tower at the centre protected a water well. An adobe outer wall, roughly 55 metres per side, enclosed the whole, and the settlement itself was ringed by adobe walls.

The fortress stands on the Gulf of Oman coast at Doba, in Dibba Al-Hisn. Its inner stone perimeter measures about 15 metres with round bastions at the corners, and an outer adobe wall of roughly 55 metres per side encloses it, with a fifth bastion over the sea-facing entrance. Expect uneven ground and strong afternoon sun.

Manuel Godinho de Erédia depicted the fortress around 1620 in his "Livro de Plantaforma das Fortalezas da Índia". The drawing shows a square inner perimeter of stone walls about 15 metres long with round bastions at the corners, a central stone tower over a water well, and an outer adobe wall roughly 55 metres per side with a fifth bastion above the sea-side entrance.