Another one of predominant landmarks in Rouen are the timber houses.  The entire old town it seems is dotted with them.  Some in better shape than others, some looking like they were just built and some so skewed they look like they are falling over.  All of them however, absolutely charming and beautiful.  Most of these date back to 1600s.  Rouen is a lot like Ribeauvillé but on a massively larger scale.