Egmore museum is a nice one where you could see sculptures of various centuries, metalic monuments, ancient coins and currencies,very informative zoological museum, kids areas like replicate of Dynosur in size,action and sound. If you are very fond of these then you need atleast 3 hrs to go around. Spacious location. you could see so much of trees, an escape from heat with in the city. Enough of parking and nominal entrance fees. Very famous Connemara Library is in the same campus. Excellent one for book worms.