Osaka Castle — Concrete Reconstruction with Museum

**Museum highlights:** The 8-floor museum (elevator to 8F, descend via exhibits) covers: Toyotomi Hideyoshi's biography (peasant to ruler), Siege of Osaka (1614–1615) where Tokugawa defeated Toyotomi, castle construction techniques, and armor/weapons displays. The 8F observation deck (50m high) provides 360° city views. Audio guide (¥600) adds significant context — worth the cost for history enthusiasts. **Stone wall engineering:** The castle's stone walls use massive granite blocks — some weighing 100+ tons, transported from quarries 100km away by boat and ox cart. The Tamon Turret area displays construction diagrams explaining how Edo-period engineers moved these massive stones using levers, logs, and coordinated human power. The walls remain original 16th-century construction despite the keep being modern. **Cherry blossom timing:** Peak bloom (late March–early April, varies ±1 week annually) sees 100,000+ daily visitors during weekends. The Western Outer Moat path is most photogenic — cherry branches overhang the moat creating pink reflection. Arrive at sunrise (6:00–7:00) for photography without crowds. Night illumination (18:00–21:00 during bloom) adds dramatic lighting but intensifies crowds.