"Have you been to Chiba Prefecture (千葉県)?" asks Japan Rail Club. They explain, "Located in the Kanto Region and neighbouring Tokyo on its east, perhaps, unknowingly, you have already stepped foot into Chiba Prefecture. If you have ever taken a flight from Narita Airport (成田空港), or enjoyed the rides at Tokyo Disneyland (東京ディズニーランド), or attended a concert at Makuhari Messe (幕張メッセ), did you know that these are all in Chiba Prefecture?" Please read their page about Chiba to learn more about attractions in Chiba, and about the peanuts that Chiba famously produces.