Thiruvananthapuram is also notable for its seaside. You can easily spend a relaxing day visiting Technopark and Western Ghats. There's plenty more to see, including sights like Shri Padmanabhaswamy Temple and Trivandrum Secretariat.
Thiruvananthapuram's Thampanoor neighborhood has a host of places to visit such as Thiruvananthapuram Zoo and LuLu Mall Thiruvananthapuram.