In 2026, a visit to Osaka Castle is a "split" experience regarding cost. Entering the Osaka Castle Park (the grounds) is completely free. This includes the massive stone moats, the outer walls, and the beautifully landscaped paths where locals go for jogging and picnics. You can walk right up to the base of the "Main Tower" (Tenshu) and take photos without paying a yen. However, if you want to go inside the Main Tower, which houses a modern museum and an observation deck with panoramic views of the city, there is an entrance fee of 1,200 yen for adults. High school and college students pay a discounted rate of 600 yen, while children (junior high and younger) enter for free. Certain specific attractions within the park also require separate tickets, such as the Nishinomaru Garden (200–350 yen) or the special openings of the historic Yagura (turrets). If you hold the Osaka Amazing Pass, entry to the tower and several other park facilities is included at no extra cost, making it a popular choice for tourists in 2026.