As the Angevin style partakes so closely of northern and southern types intermixed, so the distinctive architectures of Maine, if such there be, may be said to favour the styles of both Normandy and Anjou; at least so far as the cathedral at Le Mans shows a combination of Angevin and Norman detail. The really distinctive southern influence is to be noted in the Romano-Byzantine nave, the exterior of which, so far as the western front is concerned, is far more notable in the rigidness and austerity of its lines, than by any richness of ornamentation or decoration. Nothing could be more simply plain than this portal, and the wall and gable which surmount it. A large bare window, of the variety of that at Angers, stands above the doorway, which, itself, lacks all attempt at embellishment. What decoration the facade bears is after the true Byzantine manner, of the nature of brickwork displayed and set into the wall in geometrically angular fashion. What sculpture there is, two grotesque animals on either of the buttresses which flank the facade, is of minor account. This, then, is the extent of the detail of this severe western facade, the grand portal of the usually accepted great church being entirely lacking and evidently not thought of as a desirable detail when this portion of the structure was erected. It has nothing of the prodigious art expression of the frontispieces of the grand Gothic churches of the north, or of the less poverty-stricken Byzantine decoration of its own Meridional portal, which, in so far as the style can be said to take on richness of form, shows the transition tendencies of the early twelfth century. This doorway is surmounted by a tympanum, ornamented by a figure of the Saviour surrounded by the four Evangelists, a subject which has always proved itself a highly successful and popular ecclesiastical symbol, and one which in this case, as in most others, is well made use of. All the figures have suffered considerably from the ravages of time, but retain much of their interest and charm in spite of such mutilation. A tower of Romanesque foundation, but of fifteenth and sixteenth century completion, flanks this south transept.