In the area Chuoku, the historical center of Osaka, is a five-story castle with white walls and a green roof, three floors goes under the ground. The history of Osaka castle started in 1496, when this place monk Ren-'t built for private intimacy of a small Buddhist temple called the Ishiyama Hongan-JI temple, but soon it began to gather followers, and the Church was later transformed into a monastery belonging to the militant school of Pure water. The monastery for many years was under siege during the 11-year war waged by the ruler ODA Nobunaga. When in 1580 the monks were forced to surrender, they set fire to the monastery, so he got the winner.

In 1583 at this place began to build his new residence already another ruler, Toyotomi Hideyoshi. He ordered every feudal Lord, the daimyo to provide for the construction materials and manpower, thereby implying that they erected a castle should be top in the country. Worked on the construction of up to 30 thousand people per day. From all over the country and from all over the neighborhood to the construction site picked up rocks, including giant size, in the case were even the stones of the walls and foundations of nearby monasteries and stone gravestones. One of the giant stones weighed 140 tons, and was brought from the island of Kyushu from the province of Buzen. Another giant weighed 130 tons and came from the island Gray. For greater strength the stones were fastened with molten lead. Two years later was built the main tower of the castle, and a year later the construction was completed. The castle complex occupied an area of about 8 kV. miles. The height of the main tower was 58 metres. Well fortified and seemingly impregnable castle also had spaces for the reception of the noble guests, holding feasts and tea ceremonies.

In 1614, the castle was besieged 200-thousand army of the shogun Ieyasu Tokugawa, but withstood this onslaught. Ieyasu seized the castle at the second attempt, made in 1615. Being at that time the owner of the castle Hidari, the son of Toyotomi Hideyoshi, and his mother is shameful defeat chose suicide (at the point of death a memorable character), and the castle was destroyed.

In 1620 by the order of Tokugawa Ieyasu, the castle was rebuilt, but in 1665 its main tower was burned down after a lightning strike, so again followed by restoration work. After the next fire that occurred during the Meiji Restoration of 1868 on the site of the castle has remained mostly in ruins, and the surviving buildings were turned into barracks. Renovated in 1931 the castle was destroyed again during the Second world war, and another of his restoration was carried out only at the very end of the twentieth century. Castle square has decreased by eight times and is only 1 square mile, and the reconstructed main tower is now a Museum.