Of the church of Otho the Great at Magdeburg we know nothing but from a model in stone, about 12 ft. in diameter, still existing in the present cathedral, and containing sitting effigies of Otho and his English Edith, who were buried in the original edifice. The model unfortunately was made in the 13th century, when the original was burnt down; and as the artists in that day were singularly bad copyists, we cannot depend much on the resemblance. It appears, however, to have been a polygon of sixteen sides externally, like the two just mentioned; and if it is correct to assume, as was generally the case, that the choir of the present cathedral is built on the foundation of the older church, its dimensions must have been nearly similar, or only slightly inferior to those of either of the two last-mentioned churches. The details of the model belong to the age in which it was made, and not to that of the church it was meant to represent. At Ottmarsheim, in Alsace, is another example which, both in design and dimensions, is a direct copy of the church at Aix-la-Chapelle. The only difference in plan is that it remains an octagon externally as well as internally, and that the gallery arches, instead of being filled with a screen of classical pillars borrowed from Italy, are ornamented with shafts supporting eight arches designed for the place. There is no tradition which tells us who built this church, nor for what purpose it was erected. It is older than that at Nymwegen, but is certainly a copy of Charlemagne’s church, and apparently not very much more modern. At the Petersberg, near Halle, is a curious compound example shown in the Woodcut No. 726. It is a ruin, but interesting as showing another form of circular church, differing from those described above, more essentially German in design, and less influenced by classical and Romanesque forms than they were. It never was or could have been vaulted, and it possesses that singular flat tower-like frontispiece so characteristic of the German style, which is found in no other country, and whose origin is still to be traced. At Fulda there is a circular church of a more complicated plan than this, though it is in fact only an extension of the same design. The circular part or choir is in this instance adorned with eight free-standing pillars of very classical proportions and design, very similar to those of Hildesheim (Woodcut No. 699). There is a small transeptal entrance on one side of the circle, and apparently a vestry to correspond on the other. It is altogether one of the most perfect buildings of its class, either in Germany or France, in so far at least as its plan is concerned. Its date is probably the beginning of the 11th century, but it stands on a circular crypt of still more ancient date.[72] [Illustration: 726. Church at Petersberg. (From Puttrich.)] [Illustration: 727. Plan of Church at Fulda. (From Puttrich.) Scale 50 ft. to 1 in.]