Our visit to Osaka Castle during the Cherry Blossom Festival was absolutely wonderful. We dined at a gorgeous rooftop restaurant for lunch, made the climb to the castle’s top level observatory deck to see an incredible view of Osaka city, and had plenty of time left to stroll the castle grounds and garden, walking amongst the 600 stunning cherry blossoms in full bloom under the warm, blue skies before the heavens opened up and rained for a few hours. Here’s everything you need to know about visiting Osaka Castle.