Such was the spirit which inspired the builders of the Belgian churches. Certainly the most typical and perhaps the most beautiful is Notre Dame of Tournai, with its romanesque nave, built in the eleventh century, its early Gothic choir (thirteenth century) and its later Gothic porch (fourteenth century). It illustrates admirably the succession of styles used in the country during the Middle Ages and the series of influences to which these styles were subjected from the East and from the South. Most of the romanesque churches of the tenth and eleventh centuries were built either by German architects or by their Belgian pupils. Though the best examples of the period are now found either at Tournai (cathedral and St. Quentin), at Soignies (St. Vincent) and at Nivelles (Ste. Gertrude), the centre of the school was at Liege, where St. Denis, St. Jacques, St. Barthelemy and especially Ste. Croix still show some traces of this early work. The main features of these buildings, in their original state, are, beside the use of the rounded arch, round or octagonal turrets, with pointed roofs, over the facade and sometimes over the transept. Illustration: THE CATHEDRAL, TOURNAI (TWELFTH-FOURTEENTH CENTURY). _Ph. B._ With the decline of German political and intellectual influence, Gothic was introduced into the country by French architects. In the last years of the twelfth century, Tournai thus became the meeting-place of the two currents, and, owing to its favourable position on the Scheldt and to the material available in the district, dominated the whole religious architecture of Flanders. The period of transition lasted over a century and produced some of the most characteristic religious buildings of the country, in which both the rounded and pointed arches are happily combined. To this period belong St. Jacques and Ste. Madeleine of Tournai, St. Nicolas and St. Jacques of Ghent and the pretty little church of Pamele, built by Arnold of Binche (near Tournai) between 1238 and 1242, where beside the romanesque turrets of the facade may be found a short central octagonal Gothic tower. The well-known Church of St. Sauveur at Bruges, begun in 1137, belongs to the same period, but brick instead of Tournai stone has been used for its erection. The same feature is found in a good many Gothic churches in maritime Flanders and Holland, which were too distant from the Hainault quarries. Tournai again, in the choir of its cathedral, furnishes a good example of Belgian early Gothic (thirteenth century), of which the destroyed cathedral of Ypres, St. Martin, was considered the masterpiece. All trace of the round arch has now disappeared and the columns are formed by massive pillars.