I love Japanese roof tiles. Their texture, shape, glaze and colours are a major contributor to the appeal of temples and other traditional Japanese buildings. Another fascinating element of such buildings are the rain chains, or kusari-doi, that so much more elegantly deal with off-roof water flow than the usual drainpipe.
This photograph is of part of the Jyokan-ji temple near Minowa Station. It lies right on the boundary of the Arakawa and Tatio wards which is a fascinating area to explore