Mannar Fort is a historic coastal fort located in Mannar, in the Northern Province of Sri Lanka. It was originally built by the Portuguese in 1560 and later taken over and strengthened by the Dutch in the 17th century. The fort has a square shape with four bastions at its corners and thick stone walls that once protected the strategic port of Mannar. Situated near the Mannar Lagoon, the fort played an important role in colonial trade and military defense. Today, Mannar Fort stands as a historical landmark, offering visitors a glimpse into the island’s colonial past and the region’s rich heritage.