It's been billed as the world's biggest toy store and I can vouch that after you follow my two older girls around it, you feel like it is a giant place. Aside from that they also are partners with Amazon, so if you shop online you can often get some excellent deals (free shipping at times even).
I like that they have a great clearance selection most of the time and at times you can find great discounts with store coupons. In the summer they offer a daily "kids camp" activity and my kids thought that was fun.
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