Karamana Mandapam is near the Karamana Bridge on the National Highway from Thiruvananthapuram to Nagercoil. The Mandapam built by the then Maharaja of Travancore, Swathi Thirunal was used for the purpose of watching the strong gushing currents of the overflowing Karamana river. It was constructed entirely with stone and remains a perfect example of classic decor. Local attractions near the Karamana Mandapam include Pazhavangadi Ganapathy Temple, Sree Padmanabhaswamy Temple and Shanghumughom Beach.