The "Historical Real Mystery Solving Game" held at Osaka Castle Park is a unique event themed around stone walls. Visitors will explore the history carved into the stones while solving mysteries related to the stone walls. Three newly added areas allow participants to enjoy a wider range of tours. During the exploration of Osaka Castle Park and Nishi-no-Maru Garden, participants can learn why the stone walls of the first Osaka Castle were hidden, the historical changes of Osaka Castle, and the differences between the stone walls. This offers visitors a deep understanding of the history of Osaka Castle. Moreover, certain inscriptions hidden on specific stone walls in this event provide new discoveries and surprises, offering a special experience for participants. It's appealing not only to history enthusiasts but also to those less familiar with history. This is more than just a mystery-solving game. In the grand setting of Osaka Castle, test your intuition and reasoning skills, and don't miss the moment of becoming part of history. It's the best place to visit with friends and family to learn and share fun.