It's not that MiChiMu doesn't have some very cool exhibits - steerable boats, fishing poles, moveable cranes, a mock mini grocery store, pretend doctors office with tools, music/noisemaker room, coloring/art center... it's just WAY overpriced for what you get.
Even when you spend several minutes at each exhibit, you can finish the whole place in under 2 hours - 2.5 if you play on the playground outside (which is not that much cooler than any of the free parks in the area - particularly southpointe park on nearby miami beach). When you consider that you're paying close to $20-$25 per person (children AND adults both pay)... it's just kinda low value. You'd think you might get included parking for that - but no, not really. We've gone for "special exhibits" like seuss or wizard of oz and been really disappointed... they often seem to just "revamp" an existing exhibit. For instance, they recently "debuted" pirate themes - that used the same boat structure in the small-kids room with some variations to the decor. We were not impressed.
Now - if you happen to have a coupon on admission (they're sometimes on Groupon), or if you have membership at other Miami attractions (zoo, museum of science, etc) you can get discounted admission and then it may be worth it.
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