<Tr> <Th> Built </Th> <Td> 1503 </Td> </Tr> <Tr> <Th> Materials </Th> <Td> Stone </Td> </Tr> <P> Pallippuram Fort is a fort in Pallippuram, Vyppin, Ernakulam district of Kerala, south India . It was built by the Portuguese in 1503 and is the oldest existing European fort in India . The Dutch captured the fort in 1661 and sold it to the Kingdom of Travancore in 1789 . The fort is situated in the northern extremity of Vypeen island and is hexagonal in shape, a form popularly known as ayikkotta or alikotta . </P> <P> Hexagonal in shape, the lowest internal floor of the fort is raised to a height of 5 feet (1.5 m). The gate and the door posts, and the lintels are finely dressed and arched while underground there is a cellar that was used to store gunpowder . A 3.25 by 3.25 feet (0.99 m × 0.99 m) well provided a source of fresh water . </P>

Where is the portugal fort build in 1503