osaka castle in the summer with a garden with somei yoshino cherry blossoms blooming

architecture asia asian attraction beautiful blooming blossom blossoms blue castle cherry clear culture days emperor famous festival floral flower fortress garden heritage history japan japanese kansai landmark medieval middle nature ninja old oriental osaka palace pink postcard sakura samurai scene scenery season seasonal sightseeing sky skyline skyscraper somei spring springtime summer surround symbol time touristic tower unesco yoshino