The ground-plan is in the shape of a Latin cross--with an eastern apse, two small apses to the east of the transepts, and a nave and aisles of seven bays. There is an octagonal lantern over the crossing, and the whole church is groined. The doors are, two in the east walls of the transepts, one at the west end (of marble), and one with a projecting open porch over it near the east end of the north aisle. Two western towers were intended to be built, and the staircases to them are carried up in the western and southern aisle walls in a very unusual and picturesque fashion. They commence in the third bay east of the towers, and are carried up in a continuous rise, opening to the church with a series of arches stepping up to suit the level of the staircases. The western bay to which these stairs lead is groined at a lower level, as well as at the nave level, so as to form a very lofty gallery open to the church. The clerestory consists of very small windows, and there is no triforium; the main portion of the columns goes up to [Illustration: 10. DUOMO. TRENT. p. 81.] and carries the groining, and though the main arches are all semi-circular, there is nevertheless an evident attempt--and it is successful--to give an impression of height to the interior. The continuous arcades under the eaves are carried also across the front of the transepts, and give a great effect of richness to the external architecture. Of the two towers only one is complete, and this was built in the sixteenth century. The northern porch is the only place in which the pointed arch appears, and it seemed to me to be of the fourteenth century, though the doorway is of Lombard character, with very quaint but poor carving in its tympanum, of Our Lord with the four Evangelists. The whole church is built of stone, and has a Classical want of life and vigour which one notices only too often in the best Lombard work. Were it not for the building attached to its north-east angle, I suspect the general impression would be much less agreeable than it is. This is a lofty erection with two square turrets and a small apse at the east, parts of which seem to be earlier than the date I have given to the cathedral. It is connected with the north-east angle, but its axis is not parallel with that of the cathedral, and there is consequently a good deal of picturesqueness in the perspective, besides which it prevents the otherwise insipid outline of the whole building being perceived.