If the visitor likes to run back to the third station on the line by which he has arrived, i.e. to Boule-Ternère, and ascend the lateral valley for five miles, or else take a carriage from Vinca, he can see one of the most interesting monuments of medieval architecture in Roussillon. This is an Augustinian priory of Serrabonna, founded in 1082; Artal II, Bishop of Elne, consecrated the church in 1151. The church consists of a nave and two side aisles, which are cut off from the nave; that on the south, standing on the edge of a precipice, was formerly open to sun and air, supported on columns of white marble, the capitals sculptured with all the richness and quaintness affected in the early twelfth century. The sun has mellowed the marble to a rich golden hue. This aisle is now converted into a stable. The north aisle communicated with the galilee or pro-naos, and with the choir. Between the doorway into the cemetery and that into the nave is the galilee, opening outwards, through a large portal covered with magnificent sculptures. The galilee is composed of a hall supported by round-headed arches resting on pillars, single and double, with richly sculptured capitals all in white marble. The priory is situated in a wild and desolate region, thinly populated. Nearer to Prades, within an easy walk, is another ruined religious house, S. Michel de Cuxa, founded in the ninth century. The abbot wore the mitre and exercised quasi-episcopal jurisdiction over fifteen parishes. The abbey obtained a high repute on account of the sanctity of several of its members, as S. Romuald and Peter Orseolo, the latter of whom had been Doge of Venice. The situation is delightful. The monastery is planted on the summit of a hill above the waters of the Riberetta. About it is an amphitheatre of mountains, opening out to the south to afford a full view of the Canigou. Springs of pure cold water gush forth in many places. The great abbey is now in such complete ruin that it is difficult to distinguish the parts of the monastic building. The splendid cloister has been destroyed, and portions have been transferred to adorn the baths at Prades. The church is Romanesque, with a pointed choir. The nave is now roofless, and is used for a storehouse. The church formerly possessed two towers: one fell in 1839, the other leans. The story goes that the architect who built it, finding that his erection was out of the perpendicular, ran away, and was never heard of again. The fine Renaissance doorway of the abbot’s house is intact. It is richly carved in white marble, yellowed by the sun, and is surmounted by a sundial, on which is represented a Benedictine monk looking up at the sun, and bearing the inscription, _Sub uno solis radio omnem mundum collectum conspexit_.