Examine the strategic military design of Osaka Castle on this guided walking tour. Starting near the castle grounds, you will walk through the outer moats and layered defences created to slow, separate, and control attacking forces. Observe the triple moat system, complex gate arrangements, and masugata gate spaces designed to corner intruders. Follow winding paths that once forced enemies to advance under constant threat. See the largest stone used in the castle, learn how massive stones were transported in the 16th century, and identify concealed marks left by skilled stonemasons. Learn how wall angles and construction techniques prevented climbing. Visit the castle tower, which functioned as a command centre and final stronghold, featuring arrow slits, gun ports, and gold elements intended to intimidate opponents.