Leaving now the inside of the cathedral let us examine the exterior of this admirable edifice. Here, details are impossible; we must see the whole mass, to form an idea of it. Who could number so many pieces of sculpture, capitals, sculptured galleries, bas-reliefs, and ornaments, which are multiplied under all forms? Historical explanations are those only which can be offered to the reader. We may add, that they are the most useful, since the rest is an affair of the eyes. The whole of the western facade, comprehended between the two front towers, is from the munificence of cardinal d'Amboise I. The building commenced on the 12th of june 1509, and was finished in 1530. The bas-reliefs, which decorate the doorways under the three entrances from the porch, were more or less mutilated by the calvinists in 1562. That on the right is now scarcely to be recognized: that of the great portal represents the genealogical tree of Jesse, or of the family of the Virgin; that on the left, the beheading of John the Baptist; the latter porch suffered considerably from a frightful storm, which took place in 1683.[11] The tower, which terminates the facade to the north, bears the name of Saint-Romain. Its foundation is the most ancient part of the whole edifice; the rest was built later and at different periods. The whole was terminated in 1477, under the cardinal d'Estouteville. Before the revolution the tower of Saint-Romain contained eleven bells, there were four others in the pyramid, and only one in the Butter Tower, but which was heavier than all the others and of which I shall speak. The tower, which terminates the facade to the south, is named the butter tower (_Tour de Beurre_), because, it was erected with the alms of the faithful, who, afterwards obtained leave to eat butter during Lent: Its height is two hundred and thirty feet. The first stone was laid in the month of november 1485, by Robert de Croixmare, archbishop of Rouen. It was nearly twenty two years in building, since the edifice according to Pommeraye, was only terminated in 1507. Before its completion, it was consecrated (in 1496), by Henry Potin, suffragan to cardinal of Amboise Ist.