Ehime Prefecture, located on the island of Shikoku, is known for its citrus production, particularly mikan (mandarin oranges). It is home to Matsuyama Castle, one of Japan's twelve original castles, and the historic Dogo Onsen, one of the oldest hot springs in the country. The Shimanami Kaido, a scenic cycling route connecting Ehime with Hiroshima across islands, is another highlight.