Hiroshima is flat. The Peace Park is flat. Very easy to get around.

I speak Japanese and I thought the public transportation was complicated for me so I can imagine for non Japanese speakers will have more difficult time. I suggest to take a cab since the time is usually limited for those people who stop by the big ship and it's better to walk around the Peace park and feel what actually happened. The must see site there is Hiroshima Peace Memorial Museum and the park and the dome. To go through the museum will take about 1 hour or more. Walking around the park and to get to the Dome which is aligned to the Peace Memorial will take about another hour. Cruise ship usually have a land tour so maybe you should take one of those. Also the must see site Hiroshima area is Miyajima Island shrine which is Japanese National Treasure. It's 1/2 hour train ride and then need to take a ferry which is pleasant. That's another half and hour. In the island you can stroll around the shrine it's a small area so you only need probably 1-1.5 hour. Be aware of deer because they follow you and put their head in you bag and start to eat stuff!

The park is open all through the year. But the A-bomb museum is closed on New Year's day.

Hi, The Peace Park is virtually walking distance across the river from the city. Also a few buses run through the top and bottom main roads, and you can also take the central trams and hop off for a short walk.