Wielkopolanin
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Important: They open at 10:00, Mondays is closed, on opening be ready for queue, you might meet some people waiting in front and it is going relatively fast with it, but depends on time of year, you may lose some extra time waiting.
For your usage there are free to use in price of tickets storage lockers, some of them are very big so you can put even some bigger luggage with no worries!
Toilets are cleans and all the workers very polite!
With Oslo pass entrance is free!
Very good museum, beside I haven't found any joy in exploring modern art expositions (top floor and 2nd floor half of exhibitions). The first floor and other half of second exhibition is presenting good class of historical art, sculptures, furnitures, pottery, images, drawings, exponats for rooms like lamps, mirrors etc. From different periods. There are items from ancient times, like ancient Greek and Roman Empire periods, items from other ancient cultures like Egipt. As well as all further time period until nowadays modern art. I loved some of the pictures, the Roman emperor's busts made of marble or ancient pottery which is real art! There were some interesting art pieces from other parts of Europe or Asia like Japanese and Chinese.