Thangassery is situated 5 km from Kollam town. This seaside village of historic importance has the ruins of an old Portuguese fort and churches which was built in the 18th century. The chief attraction of the place is the light house, built in 1902. The 144 ft. light house stands as a sentinel, warning seamen of the treacherous reefs of Thangassery. Visitors are permitted to visit the lighthouse between 3.30pm and 5.30pm.