Things to do in Osaka.?

Question:

I will be flying into Osaka in March next year and staying for 3 or 4 days before heading to Tokyo. Can you suggest any things to do or "Must See" places?

Answer:

I like Osaka, but honestly, if you could only visit one castle in Japan during your stay, it would be a terrible shame if you wasted it on Osaka castle. Like so many others, it is really more of a facade over a ferro-concrete building. The real castle is long gone. You should go and see Himeji Castle, which is the real deal. It's the best castle in Japan, nearly untouched by fire, war, or time. Spend at least half a day there, and the rest of the day if you want shopping in Osaka.
For the rest of your time, Tokyo has far better what Osaka has, so spend 2 days in Kyoto and Nara, and for your nights see the sights of Osaka like Dotonbori.