The reviews led me to believe the gift shop is more impressive than the museum, so I only visited the former. You can go straight up to the gift shop on the second floor without paying admission.
I can say that the gift shop is indeed impressive. I spent a fair amount of time admiring everything. They even have a giant whale skeleton hanging from the ceiling.
The purpose of my visit was to shop for a story board. Others indicated this is a good place to purchase one. However, during my visit the selection was minimal and the prices high. I really only wanted a medium or small-sized story board, and most of the ones here were large and quite expensive. While I didn't purchase my storyboard from here, I did enjoy my visit to the gift shop and the staff were so nice.
For those looking for a good selection of story boards, I would suggest going to the Prisoner's Gift Shop at the Koror prison. And you can negotiate the price. I purchased a story board for $80 that had a sticker price of $175. Even more fun, they bring in the prisoner who carved the story board to negotiate the price with you in person.
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