Tenshukaku, or castle tower of Osaka Castle was built on a lofty hill of Uemachidaichi at the center of the city as Osaka’s symbol. Osaka Castle has become more beautiful and easier for tourists to look around since the Heisei large-scale reconstruction in 1997. There is a historical museum inside the castle, and the top floor is the Observation Deck. The Osaka Castle Park that spreads across as if to embrace the Main Tower is famous for its seasonal blooms. Nearby is the Japan Mint, a famous place for its cherry blossoms and can also enjoy river cruise on the Aqua-bus "Aqua Liner".