Sultan Ibrahim Shah, who succeeded Raja Lumu in 1778, had the fort further fortified as a precautionary measure in order to defend against possible Dutch invasions.

Led by Dirk van Hogendorp, the fierce campaign was mounted as a reprisal to the series of assaults waged by Sultan Ibrahim's ally, Raja Haji Fisabilillah, against A Famosa in Malacca, which was a Dutch stronghold at the time.

The Dutch East India Company (VOC) then dispatched their fleet of vessels to Kuala Selangor to attack Sultan Ibrahim Shah.

The advancing van Hogendorp's VOC armada battered the fort from the sea with their cannons for two weeks, driving the sultan's forces into the nearby jungles.

Not too far from the lighthouse, the local museum houses arrays of ancient weapons, dioramas, specimens of old currencies, and other collections of relics and artifacts.

Offenders would be placed inside the well, which would be filled with a watery solution mixed with irritants, such as latex and bamboo shoots, up to chin-level as punishment.

Today, curious visitors may view the well at close range, which has been covered with iron grates for health and safety to prevent unwanted mishaps.