Hi Vivek! Here is a list of places you absolutely must see in Trivandrum: 1. Neyyar Dam and Wildlife Sanctuary 2. Sree Chitra Art Gallery 3. Padmanabhaswamy Temple
4. Shangumugham Beach
5. Kowdiar Palace
6. Lighthouse
7. Veli Lake Tourist Village
8. Valiathura Sea Port
9. Napier Museum
10. Karikkakom Chamundi Devi Temple 2-3 days will be more than enough for you to explore all there is to see in Trivandrum. You can explore nearby places like Kankyakumari, Kovallam etc. Depending on how many days you are planning to spend there, and the places you visit, the expenses will vary. You can find tour packages that best suit your needs. You can also have a look at these trips for more details. Happy Travelling!