If Tokyo is Japan's capital, one might call Osaka its anti-capital. Whatever you call it, though, there are many opportunities for you to discover its true character. Be sure to visit the Osaka Castle, Osaka's best known sight, and the Osaka Science Museum with its interactive activity center which the kids will love!
Osaka is a city in the Kansai region of Japan's main island of Honshu, a designated city under the Local Autonomy Law, the capital city of Osaka Prefecture and also the biggest part of Keihanshin area, which is represented by three major cities of Japan, Kyoto, Osaka and Kobe. Located at the mouth of the Yodo River on Osaka Bay, Osaka is the third largest city by population after Tokyo (special wards) and Yokohama.
Keihanshin is the second largest area in Japan by population and one of the largest metropolitan areas highly ranked in the world, with nearly 18 million people, and by GDP the second largest area in Japan and the seventh largest area in the world.
Historically the commercial centre of Japan, Osaka functions as one of the command centers for the Japanese economy. The ratio between daytime and night time population is 141%, the highest in Japan, highlighting its status as an economic center. Its nighttime population is 2.6 million, the third in the country, but in daytime the population surges to 3.7 million, second only after Tokyo (combining the Special wards of Tokyo, which is not a single incorporated city, for statistical purposes. See the Tokyo article for more information on the definition and makeup of Tokyo.) Osaka used to be referred to as the "nation's kitchen" in feudal Edo period because it was the centre of trading for rice, creating the first modern futures exchange market in the world.
Osaka belongs to the humid subtropical climate zone (Köppen Cfa), with four distinct seasons. Its winters are generally mild, with January being the coldest month having an average high of 9.3 °C (49 °F). The city rarely sees snowfall during the winter. Spring in Osaka starts off mild, but ends up being hot and humid. It also tends to be Osaka’s wettest season, with the Tsuyu or rainy season occurring between late May to early July. Summers are very hot and humid. In the months of July and August, the average daily high temperature approaches 35 °C (95 °F), while average nighttime temperatures typically hover around 25 °C (77 °F). Fall in Osaka sees a cooling trend, with the early part of the season resembling summer while the latter part of fall resembling winter.