Its construction is thought to date back to the late 18th century and it is claimed the fort's barjeel, or wind tower, is the oldest such structure in the UAE.

[4] In 1821, Ajman Fort fell briefly to a force of Darawisha Bedouin, who were removed by the action of Saqr bin Sultan of Sharjah.

In 1848, Abdelaziz bin Rashid was killed during an armed conflict with Ajman's secessionist neighbouring town of Hamriyah.

He was only removed after the intercession of the British Residency Agent acting in concert with Khalid bin Ahmed Al Qasimi of Sharjah.

The subsequent bombardment once again reduced the fort and, with one of its great towers totally demolished and a second crumbling under withering cannon fire, Humaid sued for peace and paid the fine.