After having had okonomiyaki, we went to the Umeda Sky Building which is right next to the restaurant we went to. The building is a bit peculiar in that there is a huge sky garden in the middle that is hanging 140 meters up in the air with no building below it. This is where we went. You have a great view of Osaka from there.
Escalators taking you from the buildings into the sky garden
The elevator ride up is interesting too, and the escalator that hangs in the air between two buildings is not for those afraid of heights. The view once you get up is great, though.