Da Vinci jewel still has weavers in a spin

FLORENCE, Italy - Five hundred years after the death of Leonardo da Vinci, a silk mill incorporating one of his designs is still shuttling some of the finest threads in the world across its looms.

Tucked away in the historic San Frediano neighborhood in Florence, L'Antico Setificio Fiorentino was founded in 1786 and is one of the oldest silk workshops in Europe.

Its looms date back to the 17th, 18th and 19th centuries, but the jewel at its heart is a machine to unwind the reels of threads, designed by Renaissance genius da Vinci, who died in 1519.