The ground-plan is rectangular, with a square apse; the interior is Roman cruciform, consisting of a nave and two aisles; the transept, like that of Santiago, is also composed of a nave and two aisles; the four arms of the cross are all of them very short, and almost all are of the same length. Were it not for the height of the nave, crowned by a Romanesque triforium of blinded arches, the interior would be decidedly ugly. However, the height attained gives a noble aspect to the whole, and what is more, renders the ensemble curious rather than beautiful. The large and ungainly choir spoils the general view of the nave, whereas the continuation of the aisles, broad and light to the very apse, where, facing each aisle, there is a handsome rose window which throws a flood of coloured light into the building, cannot be too highly praised. The walls are devoid of all decoration, and if it were not for the chapels, some of which in default of pure workmanship are richly ornamented, this see of Tuy would have to pass as a very poor one indeed. The roof of the building has been added lately, doubtless after one of the many earthquakes. It is of a simple execution, neither good nor bad, composed of a series of slightly rounded arches with pronounced ribs. It is outside, however, that the tourist will pass the greater part of his time. Unluckily, the houses which closely surround the building forbid a general view from being obtained of any but the western front, yet this is perhaps a blessing, for none of the other sides are worthy of special notice. As mentioned, the appearance of the church is that of a fortress rather than of a temple, or better still, is that of a feudal castle. The crenelated square tower on the western front is heavy, and no higher than the peaked and simple crowning of the handsome Romanesque window above the narthex; the general impression is that of resistance rather than of faith, and the lack of all decoration has caused the temple to be called sombre. The handsome narthex, the summit of which is crenelated like the tower, is the simplest and noblest to be found in Galicia, and is really beautiful in its original severity. Though dating from a time when florid ogival had taken possession of Spain, the artist who erected it (it is posterior to the rest of the building--early fifteenth century) had the good taste to complete it simply, without decoration, so as to render it homogeneous with the rest of the building. It is also possible that there were no funds at hand for him to erect it otherwise! [Illustration: TUY CATHEDRAL] The doors stand immediately behind this narthex. The portal is carved or decorated in an elaborate late Romanesque style, one of the most richly ornamented porticos belonging to this school in Spain, and a handsome page in the history of Galician art in the twelfth century. The low reliefs above the door and in the tympanum of the richly carved arcade, are _felt_ and are admirably executed.