Crossing by Calais, and taking hurried glances only at S. Omer, with its noble cathedral, and the fine relic of the abbey of S. Bertin, remarkable among great French churches for its _single_ western tower, I went on to Lille,--a town whose interest to architects just now is rather in the future than in the past, but whose church of S. Maurice is a striking example of the difference in the conception of a town church on the Continent and in this country in the Middle Ages. It has two aisles on each side of the nave and choir, and is groined throughout. Here we should look on such a church almost in the light of a cathedral; there, on the contrary, it is a not very remarkable parish church. Some old brick work at the back of the Hotel de Ville is the only other old feature which I remember in Lille; but its streets and market-place are busy and picturesque. From Lille, passing by Courtrai, I reached Ypres in time to spend the afternoon in sketching and studying what is perhaps the noblest example of the domestic work of Germany. Les Halles, as this great pile of building is called, seems to have been a great covered mart, rather than a mere town hall; and when I was there, a fair was being held within its walls, and, filled with picturesque groups of people, and stalls for the sale of every conceivable kind of merchandise, the grandeur of its size and design was well seen. The main portion of the building is of uniform early middle-pointed date, and forms an immense and rather irregular parallelogram, enclosing some long and narrow courts. The principal front towards the market place is, by a rough measurement which I made, about 375 feet in length; very uniform in its design, but broken in the centre by a fine lofty engaged tower, surmounted with a spire, finishing in a sort of louvre, of modern character. The whole effect of the building is inconceivably grand, leaving behind it in point of general effect even (I am bold in saying it) the Ducal Palace at Venice. In elevation the main building is divided into three stages. The ground stage consists of a succession of openings with square heads, trefoiled; the next of a long series of two-light windows with quatrefoils in the head, the openings in which are square, the tracery not being pierced; and the third stage has again an immense succession of traceried openings alternately glazed and blank. The whole is surmounted by a lofty traceried parapet corbelled out, and the steep and original timber roof is surmounted with a ridge-crest of stone, of more delicate character than I have ever seen elsewhere. The front is finished at the angles with immense octangular pinnacles, corbelling out at their base from the wall, and the tower, which rises two stages above the ridge of the roof, has also at its angles similar pinnacles. The general _motif_ of the entire front is continued happily in the steeple, the faces of which are occupied with rows of lofty windows of two lights. From the belfry,