Dab S.
Yelp
It's free, it's got exhibitions that cover Australian Aboriginal Culture, Whales and Dolphins, World Mammals, Pacific Cultures, Minerals and Meteorites, Ancient Egypt and it is in a beautiful air conditioned environment (a historic building combined with some modern building) that is easy to get around.
There are lifts, there are plenty of toilets that don't smell nasty, there is a Biodiversity Gallery, an amazing collection of Butterflies, they always turn on some school holiday activities for the kids that either cost nothing or next to nothing. I'll share a personal story with you. Some years ago I was in there having a look at the butterflies, because it really is one of the most amazing collections of butterflies you will ever get to see under glass, and you know what museums can be like at the best of times with their fossils and stuffed animals - sometimes a little creepy - and while I'm standing there looking at the gorgeous butterflies I notice a reflection in the glass of this really familiar, but very generic face. Lots of bottle blond hair, red lips and sunglasses... and the face seems to be angled in such a way as the owner is looking at me from behind the sunglasses, in the reflection on the glass. Well strike me pink it was Debbie Harry aka. Blondie!
So there you go - among all the creepy old stuffed animals and fossils, another creepy old fossil! (No I'm joking I think she's great!) I actually spoke with her for a few minutes and asked how her tour was going, and she actually grunted back at me in true New York style how well the tour was going... So be on your best behaviour, because you never know what old rock and roll legend in the Museum may come out of nowhere and bite you!
There is a free tour every day and there are some special exhibitions that come in for limited times, so all up it is an amazing facility that is always busy yet never seems too packed to move around. I love love love it. Did I mention it's free?