Expensive for what you get. Popped in with my son, started on the second floor (as suggested) walked through some average exhibits to then find ourselves on the first floor by the gift shop.
We looked at each other as said ‘this can’t be it’. Took out the map, to learn that was it. $30 a piece, 20 minutes and book done. Nothing really exciting.
Over priced and average exhibits at best. I paid extra for the penguin experience, which was worth the money.