On the second tier of the middle porch is a large rose-window that occupies the whole width of it. It is surrounded by a detached arch, which as much on account of the elegance of its workmanship, as of the boldness of its construction, is one of the most admirable parts of the Cathedral. The large painted windows have been repaired by skilful artists, Mr. Ritter and Mr. Mueller. Where the second tier begins, at the bottom of the rose-window, are four equestrian statues, placed in niches in the counterforts, three of which, those of Clovis, Dagobert and Rodolphe of Habsburg, were erected in 1291, the fourth, that of Louis XIV, was placed only in 1828. Clovis and Dagobert were the benefactors of the church of Strasburg. Rodolphe stands there, less on account of his liberalities to the Cathedral, than for having been to the last the valiant friend of the Republic of Strasburg. King Louis XIV accompanies the three others, rather from adulation than any other cause. On the upper tier of the facade are placed the equestrian statues of king Pepin the Short, of Charlemain, Otho the Great and Henry I the Fowler. On the south-side are seen in the first tier the emperors Otho II, Otho III and Henry II; in the upper tier of the same side, the equestrian statues of Conrad II, Henry III and the statue of Henry IV. On the north-side of the facade are the equestrian statues of Charles Martel, the Franconian majordomo; of Louis the Debonair and Lotharius, the son of Louis the Debonair; at last in the upper tier, the statues of Charles the Bald, king of the West-Franconians and the equestrian statues of Lotharius II and Louis the German ({+}876). Over the rose-window, but still in the compartment of the second tier, is a gallery furnished with the figures of the Apostles, and above them is placed Jesus-Christ holding in his hands a cross and banner. In the lateral towers, the same tier is taken up on each side by a high broad window in the shape of an ogee, before which rise very slender pillars. Exactly over these windows, on the third tier and also on each side, are three very high and narrow windows; the middle part, though wider, has but two, rather small ones, and surrounded by some statues. This very massive portion of the building betrays at first sight its later origin; when Erwin's plan was abandoned, this part was added to fill up the empty space between the two towers; these were already completed, and even have on the third tier their windows looking into the central porch, but which are at present hidden from the outside. That part of the middle porch is used as a belfry, four large bells are suspended in it, the largest of which, cast in 1427, weighs nine thousand kilogrammes, and serves to announce great festival days; it is also rung at the death of renowned personages, or in case of fire.