The other foundation of Mumadona, the monastery of Nossa Senhora and São Salvador in the town of Guimarães, had since her day twice suffered destruction at the hands of the Moors, once in 967 when the castle was taken by Al-Coraxi, emir of Seville, and thirty years later when Almansor[39] in 998 swept northwards towards Galicia, sacking and burning as he went. At the time when Count Henry and Dona Teresa were living in the castle, the double Benedictine monastery for men and women had fallen into decay, and in 1109 Count Henry got a Papal Bull changing the foundation into a royal collegiate church under a Dom Prior, and at once began to rebuild it, a restoration which was not finished till 1172. Since then the church has been wholly and the cloisters partly rebuilt by João I. at the end of the fourteenth century, but some arches of the cloister and the entrance to the chapter-house may very likely date from Count Henry's time. These cloisters occupy a very unusual position. Starting from the north transept they run round the back of the chancel, along the south side of the church outside the transept, and finally join the church again near the west front. The large round arches have chamfered edges; the columns are monoliths of granite about eighteen inches thick; the bases and the abaci all romanesque in form, though many of the capitals, as can be seen from their shape and carving, are of the fourteenth or even fifteenth century, showing how Juan Garcia de Toledo, who rebuilt the church for Dom João I., tried, in restoring the cloister, to copy the already existing features and as usual betrayed the real date by his later details. A few of the old capitals still remain, and are of good romanesque form such as may be seen in any part of southern France or in Spain.[40] To the chapter-house, a plain oblong room with a panelled wood ceiling, there leads, from the east cloister walk, an unaltered archway, flanked as usual by two openings, one on either side. The doorway arch is plain, slightly horseshoe in shape, and is carried by short strong half-columns whose capitals are elaborately carved with animals and twisting branches, the animals, as is often the case, [Illustration: FIG. 16. DOOR OF CHAPTER HOUSE, N.S. DA OLIVEIRA. GUIMARÃES.] [Illustration: FIG. 17. CLOISTER. LEÇA DO BALIO.]