Adjacent to Al Zubarah, Qal’at Murair was a strategically important site, providing ease of access for boats to trade and collect water along its canal, the remains of which are still visible today. Qal’at Murair - a large rectangular enclosure with four corner towers, originally featured domestic buildings, a mosque, cisterns, and large wells – and the fort remained occupied until the construction of the new Al Zubarah Fort in 1938. Today both can be seen along with original pots and pans, diving weights that would have been used by pearl divers, cannonballs, clay pipes and even coins.

https://www.qm.org.qa/en/project/al-zubarah