Osaka prefecture located in the center of Kinki region in the Midwest Japan covers the smallest prefecture land area in Japan, but boasts of largest population and highest population density second only after the capital, Tokyo. Mountains surround three sides of the prefecture and the west faces the arc-shaped Osaka Bay. Since it is close to former capitals of Japan Kyoto and Nara, it prospered as an important point for land and water transportation as well as a commercial city.
In the Osaka City is the Osaka Castle with a five-layer donjon as its core, on a lawn park that stretches for about 60,000 square meters. During the cherry blossom season in the spring, this park is especially crowded with hanami (cherry blossom viewing) crowd. Osaka's north gate, Umeda, has a gigantic stretch of underground mall that houses many restaurants, fashion and sundry goods stores.