We are permanently either standing or walking on surfaces of all kinds without ever paying any real attention to the structure. My "urban flooring" research saw me set off with my magnifying glass in hand, on the look-out for all kinds of surfaces. And what I found was a variety of smooth, reflective, rugged, rough, fine, gravelly and stony structures. Urban surfaces for the most part have a covering which is exposed to all kinds of weather conditions, rarely gets cleans and leaves little room for the rest of the environment. Urban floor coverings are in heavy use and have to withstand extreme wear and tear.