Lucien Juy made his first Simplex derailleur in his bike shop in Dijon in 1928. He went on to grow his business into a bicycle industry powerhouse manufacturing millions of derailleurs per year. He is commemorated in Dijon by this humble street.

The full address is: Rue Lucien Juy, 21000 Dijon, France.

• Themes: Geography
• Trivia related by brand: Simplex
• Date: unknown
• Derailleur brands: Simplex
• Derailleurs: none