Osaka, Osaka City Park, Japan early summer, the environment is fresh and green. How romantic is it more than a month ago? Imagine! Osaka Castle Park is free, but Shoushouge charges. The Shouge is a large castle built during the Warring States Period in Japan. It is a military-related building and watchtower. At the same time, it is also the place where the city owner lives. It's great for walking, taking pictures, and there are many people running, playing, camping and small group activities every day.