There are little details that you take for granted in large cities.  One of them is grafitti.  We found this striking Napoleon on our first day in Paris.  From them on, I took great delight in hunting out the little personal markers as we meandered through the streets.  There was a strange series of little monster cutouts pasted on buildings, tigers in concrete jungles and tiled vignettes on street corners.  Just looking for them, made us look closer at our surroundings, spending time in the moment rather than just hurrying to get to the next attraction.