Japanese Sword Museum

Devoted entirely to the art of the Japanese sword, this museum near the sumo arena preserves and exhibits blades, fittings, and armor of the highest craftsmanship, including designated national treasures. Run by an association dedicated to conserving the ancient forging traditions, it explains the metallurgy, tempering, and polishing that give the curved blades their legendary edge and beauty. Relocated to a modern building beside a riverside garden, its galleries let visitors examine the subtle grain patterns and temper lines up close.