Come out of the Croix Rousse metro and there is a nice square with some bars and restaurants. A short walk away is a fantastic view of the city of Lyon - you can see where to go for the view point from the exit of the metro.
From there make your way down the hill along the small streets and through the "traboules" - these are the secret tunnels that were used by the old silk workers (Canuds) of Lyon. The most famous is the"Traboule de la cour des Voraces" which is not far from Croix Rousse.
Get a map of where the tunnels are - there are signs around but some tunnels are locked up and so to find the next one the map was useful. Its a fun piece of real history.
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