Hiroshima is known for its oysters, and Kanawa, on a barge moored on the Motoyasu-gawa, gets its oysters from a particularly salty area of the Inland Sea. It's believed that these waters impart the firm flesh and sweet, robust taste that loyal customers love to splurge on. It's not cheap, but the oysters are worth every yen. An English menu makes it all easy, and dining is on tatami mats, with relaxing river views. The place is an easy stroll from Peace Memorial Park.