Osaka castle is a beautiful building next to the Osaka-Jo Hall. Even if it is a remake, because the original burned down in the 17th century, it still has a mystic aura and tells a lot about bygone times. I really like that typical japanese architecture, with golden ornaments and symbols.
Inside you can find an exhibition about the historical backgrounds, the feudal lords and his familiy, who lived there once, and the rebuilding.
On one side this is very interesting (almost everything is also written in English), but I'd rather like to know how they lived in that castle once, means: what have the rooms been like, what where they for and what did the residents do back then (did they have some kind of daily routine and how was it?)?
All in one the Osaka Castle is very nice place to get an insight into the history of Japan and take a break in front of the castle, where you can find some food stands and - when you are lucky - young japanese magicians. :)