The church of Notre Dame consists of a nave and aisle of seven bays in length, transepts, and a very short apsidal choir (an apse of seven sides), with an aisle and chapels planned like those of S. Remi, beyond it. There are four towers, two at the west ends of the aisles, and two in the angles between the transepts and the choir. The triforium throughout is large, lofty, and groined. As at S. Remi, the external effect of this church is much inferior to the internal effect. It is rather too heavy and ungainly, and savours much of the character of German Romanesque work. The four towers have the defect of being almost exactly alike, of four stages, richly adorned with round-arched arcades, and rising hardly at all above the level of the ridges of the roof. The south-west tower retains its fine leaded spire, with four tall pinnacles at its base, and a cluster of eight spire-lights about midway: it is an exquisite example of lead-work, and still more precious to us as affording evidence of the extraordinary extent to which decoration was sometimes carried in the Middle Ages. The pinnacles at the base still retain distinct traces of decoration on the lead, each side having a large crocketed canopy, below which is a gigantic figure, in one case of an archer with a bow. The whole is done in white and black only, the ground being the dark lead on which the white lines seem to have been marked by a process of tinning or soldering. It is a kind of decoration which we may well attempt to revive. A spire very similar to the other has recently been erected on the north-west tower, and the western front is now therefore quite in its old state, and singularly well does it look. I almost doubt whether the addition of similar spires to the two eastern towers, for which the Curé is now collecting funds, will really improve the look of the church. With four steeples, it is well that two at least should be pre-eminent, which is the present state of the case; whilst the completion of the others would reduce all to the character of mere turrets--a result not to be desired. The variety of string-courses and cornices throughout the exterior of this church, all filled with sculpture of foliage, gives a very ornate character to the external detail.