The Birla Planetarium, a part of the Periyar Science & Technology Center, has been around for three decades and is the best value for money entry on this list. For just INR 30, you’ll be able to see the stars through its numerous exhibits, add INR 20 and you’ll be able to sit through a virtual reality experience in the stars. The dome-shaped ceiling in the planetarium is a massive screen and plays programmes about the celestial phenomenon. For more on the awesome planetarium, click here.