If you have more time, you can visit Fort St. George, Santhome Cathedral Basilica, and Guindy National Park. If you have less time, prioritize the Government Museum, Birla Planetarium, and Vandalur Zoo as they offer a unique experience. Be mindful of the weather and carry sunscreen, hats, and umbrellas. Avoid carrying heavy backpacks or luggage as they are not allowed inside some locations.