Uwajimaya Village
600 5th Ave S
+1 206 624-6248
M-Sa 8AM-10PM, Su 9AM-9PM
The commercial, if not cultural, hub of the I.D. is Uwajimaya Village, a huge Japanese supermarket with many smaller eateries and a branch of the Kinokuniya bookstore. If you need anything at all from Japan while in Seattle, this is the place to find it.
Most of the older businesses in the I.D. are, of course, Chinese, and there are a few general stores where you can pick up good woks and other imported items. Over in Little Saigon, the Viet Wah supermarket has Asian foods for a lot cheaper than Uwajimaya.