I just stumbled on this post by coolhunting again. I cannot even describe how beautiful I find these works of art.
They were made by a ninth-generation Japanese shipwright named Sueshiro Sano.
These bikes aren't just beautiful to look at, however. Sano has personally ridden and raced many of his works of art. While not as a light as composites or alloys, the bike weighs in at an impressive 24 lbs. with a full build. Check out Sano's website here, and his bike page here.