The sky garden is not a garden but an observation deck on the top floor of a very tall skyscraper. You can take a free glass escalator to the top floor, and at least two elevators to see the panoramic view of Osaka. We calculated the time, and it was just at sunset when we boarded, so we could take a lot of beautiful photos -- others were thinking the same, so there would be more people at this point, a little crowded. I'm a little afraid of heights personally, so taking this free standing escalator is a bit difficult for me - if you're afraid of heights, don't look down, and if you succeed in climbing, it's still a worthwhile trip.