text: Both Vieux Lyon and the slopes of Croix-Rousse are known for their narrow 
  passageways (named*traboules*) that pass through buildings and link streets on either 
  side. The first examples of traboules are thought to have been built in Lyon in the 4th 
  century.[54] The traboules allowed the inhabitants to get from their homes to the Saône 
  quickly and allowed the canuts on the Croix-Rousse hill to get from their workshops 
  to the textile merchants at the foot of the hill. 