Udayagiri Forts: (34 kms.) This fort is situated near the main road leading to Padmanabhapuram. Built during the regime of king Marthanda Varma (1729 – 1758), it had an ancient foundry for casting guns. It is said that a Dutch General by name De Lennoy became the prisoner of the king when the Dutch army was defeated at Colachel in 1741. Later, the General became a trusted friend of Marthanda Varma and helped him in training the state army in modern methods of fighting. The tomb of the General is situated within this fort.