Yizheng Park is located in Zhongzheng Park, which is the first park that combines with the army, navy and air force facilities. The various weapons of Yizheng Park such as F-104G Star Fighter, the missile of the Victory of Samothrace, five inches navy cannon, amphibious chariots, and so on. The worthiest object at the park is the Armstrong artillery of the ancient period of Liu Ming-Chuan. The diameter of gun muzzle is 8 inches; the gunshot is 5 kilometers; the height is 5.55 meters; the weight is 12 metric tons. It is the only authentic ancient artillery of Keelung. There are also signs of forbidding climbing those weapons at the park. The purpose is that avoid visitors to get hurt and protect the display weapons.