Nagoya is the capital and largest city of Aichi prefecture, in the Chubu region of Honshu, one of the islands in Japan. The hub of the Aichi region, Nagoya is Japan's fourth-largest city after Tokyo, Yokohama and Osaka and one of the nation's major economic centers. In terms of manufacturing, as home to automaking giants Toyota, Honda, Mitsubishi Motors, Nagoya is to Japan what Detroit is to the United States — which, along with being completely flattened during World War II.