The Cathedral of St. Stephen at Vienna is a large and exceedingly rich church. In this building the side aisles are carried to almost the same height as the centre avenue--an arrangement not infrequent in German churches having little save novelty to recommend it, and by which the triforium, and, as a rule, the clerestory disappear, and the church is lighted solely by large side windows. The three avenues are covered by one wide roof, which makes a vast and rather clumsy display externally. A lofty tower, surmounted by a fine and elaborate spire of open tracery, stands on one side of the church--an unusual position--and an unfinished companion tower is begun on the corresponding side. Great churches and cathedrals are to be found in many of the cities of Germany, but their salient points are, as a rule, similar to those of the examples which have been already described. The incomplete Church of St. Barbara at Kuttenberg, in Bohemia, is one of somewhat exceptional design. It has double aisles, but the side walls for the greater part of the length of the church rest upon the arcade dividing the two aisles, instead of that separating the centre avenue from the side one; and a vault over the inner side aisle forms in effect a kind of balcony or gallery in the nave. The illustration (Fig. 43) which we give of the exterior does not of course indicate this peculiarity, but it shows a very good example of a German adaptation of the French _chevet_, and may be considered as a specimen of German pointed architecture at its ripest stage. The church is vaulted, as might be inferred from the forest of flying buttresses; and the vaulting displays some resemblance to our English fan-vaulting in general idea. German churches include some specimens of unusual disposition or form, as for example the Church of St. Gereon at Cologne, with an oval choir, and one or two double churches, one of the most curious being the one at Schwartz-Rheindorff, of which we give a section and view. (Figs. 44, 45.) In their doorways and porches the German architects are often very happy. Our illustration (Fig. 47) of one of the portals of the church at Thann may be taken as giving a good idea of the amount of rich ornament often concentrated here: it displays a wealth of decorative sculpture, which was one of the great merits of the German architects. [Illustration: FIG. 44.--DOUBLE CHURCH AT SCHWARTZ-RHEINDORFF. SECTION. (1158.)]