The towers and campaniles of Provence also either correspond in design with those of Italy or are imitated from Roman monuments in the country. The circular baptisteries, of which a good many examples survive, are like those in Rome, constructed with columns and caps from ancient buildings, or are wrought in imitation of them. Sculpture also abounds in Provence, being inspired by the abundant remains of ancient work in this favoured province of the Empire. Along with the imitations of Roman work, there is also, as already remarked, a considerable infusion of Byzantine influence. This, according to Viollet-le-Duc, may be observed in the polygonal form of the apses; in the polygonal cupolas supported on a series of corbelled pendentives; in the flat arcades employed to decorate the walls; in the mouldings with small projection and numerous members; in the flat and delicate ornament; and in the sharp and toothed carving of the foliage. Other writers, however, are of opinion that too much weight has been attributed to the influence of Byzantine art, and that almost all the above elements may be accounted for by the Roman traditions of the locality. It is doubtful in how far the Roman buildings which survived in Provence and the imported classic taste of Byzantium were beneficial to the arts in that country. They no doubt gave an impetus and motive which would otherwise have been awanting, and thus assisted the Provençals in making the early start they did in the revival of their architecture. But on the other hand they acted prejudicially to that revival, in impressing on it the stamp of the classic trabeated style, which in their absence it would have escaped, and might probably have been developed in the freer and more natural manner which occurred at a later date in the North. The early use of the pointed arch in the vaulting of the Provençal churches is another striking feature of the architecture of the district. Much has been written about the origin of the pointed arch and the date of its introduction into Western Europe. In the North of France its first use occurred in the twelfth century, and it was at one time maintained that the Provençal churches, from their having pointed vaults, must necessarily be later than that date. There is now, however, no question as to the greater antiquity of many of the Southern buildings, thus proving that the use of the pointed arch was adopted in the South considerably earlier than in the North.