The most beautiful blades I have ever seen were in the Japanese Blades exhibition in the British Museum (top floor). Genuine Masamune blades and gorgeous mounts, and others of course... True works of art. All the people with me at the time (I go every time the exhibit does the rounds!!) are not into blades but really appreciate the katana, tanto wakazashi, tachi etc etc. Well worth a visit when they are there.