Osaka Castle was a great experience! It has a rich history and eight floors to explore. You can take the elevator or stairs—we chose the stairs because the elevator line was long. Each floor shows parts of the Osaka War and the castle’s rulers. It was very crowded, so buying tickets in advance with a QR code helped us skip the long line. There’s also a lot of walking and stairs. Outside the castle are shops and restaurants with beautiful souvenirs. Don't forget to dress up as a Japanese general. They had costumes where they dress you up in a kimono or general suit and take your photo! We paid 1,800 yen for a photo frame. So worth it!