Osaka which has a 1 500 year history as the water capital was the center of japan between the 16th and 19th centuries osaka was also the home of hideyoshi toyotomi the father of the modern japanese unification youll get to visit his castle the osaka castle and learn why even today osaka has a great appeal and is still known domestically as the nations kitchen while tokyo may be the biggest city in japan osaka has always flourished as a center of the japanese economy todays visitor