The name of this old street refers to the old tower (which belongs to St-Pierre-le-Puellier church) located here; Protestants destroyed the top during war of religion.
This house (from the beginning of the 16th century) is located in the tanners' district. On the first floor, there's a window lighting up a small room. Bars prove this room was a strongbox... Ground floor's window lighted up a workshop.