Kalpitiya Fort

Located at the northern tip of the narrow land tongue that stretches to the north for about 50 kilometres beyond Puttlam, parallel to the mainland. Built in 1667, on the spot where the Portuguese had a stockade and a Jesuit chapel. The walls are about 4 meters high and inside are the remnants of the chapel, a commander's house, barrack rooms, a prison and several go downs. Kalpitiya was important since it command the entrance to the bay. Puttlam was an area that had large amounts cinnamon cultivations. The Dutch even built a canal from Puttlam via Negombo to Colombo to bring the cinnamon. The fort was neglect for many years until it was turned into a Sri Lankan Navy base for training and operational activity escalation of the Sri Lankan Civil War. The ramparts are in good condition today.

Source:http://en.wikipedia.org/wiki/Forts_of_Sri_Lanka#Kalpitiya_fort