This was the last site we visited in Hiroshima before heading back to the train station to head back to Osaka. - The grounds were north of Hiroshima memorial. It was pretty big, and had multiple entries and gates. We had to go over a moat just to get inside.
We walked up to the castle itself, which looked super cool to see up close, lots of detail. At this point in the trip though, didn’t really want to go inside another temple / shrine. Admission was also 740 Yen and we wanted to spend that money on Japanese food instead :).
There's definitely more history here that someday I'd like to come back to.