This is OK. Basically the State Library of NSW is a lovely building - particularly the Mitchell Building, with some lovely stained glass windows and room for not only a pile of books and reference data for university student types but also room for the odd travelling exhibition. At the time of my visit it was a display of photography.
As such it is hard to rate because it would depend utterly on your predilection for whatever was on display at the time. Other than that, apart from the beauty of the Mitchell Building and the rows of tomes that line its walls there is limited interest in... a library. A shop and some basic food options round out this free attraction which is probably best seen in transit between, say, Hyde Park, St Marys Cathedral and the Hyde Park Barracks through to the NSW Art Gallery and the Botanical Gardens.
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