In Japan, there are three major urban Chinatowns: in Kobe, Nagasaki and Yokohama.
For travelers staying in Tokyo, the Yokohama Chinatown (Yokohama Chukagai) is the most accessible. You can check out the festively lit Chinatown area for less than five dollars; it’s about a 35-minute ride from Tokyo’s Shibuya district. There's plenty of shopping, and this is one of the few places where one can attempt to haggle for a deal.
But most people don’t go to Chinatown to shop, they come to eat. There are as many restaurants as there are Chinese styles of cooking.
For the day-tripper, look out for one of the buffets. Many restaurants offer buffet specials with a two-hour limit and offer the Japanese favorite, Peking Duck. Try the gyoza (pot stickers) and the ramen – people travel for many miles to do the same. It’s a good idea to shop around for a good buffet deal because the prices change frequently.