Lewes is one of the very few castles in England which have two mottes.[494] They were placed at each end of an oval bailey, each surrounded by its own ditch, and each projecting about three-fourths beyond the line of the bailey. On the northern motte only the foundations of a wall round the top remain; on the other, part of the wall which enclosed a small ward, and two mural towers. These towers have signs of the early Perpendicular period, and are very likely of the reign of Edward III., when the castle passed into the hands of the Fitz Alans. The bailey, which enclosed an area of about 3 acres, is now covered with houses and gardens, but parts of the curtain wall on the S.E. and E. stand on banks, bearing witness to the original wooden fortifications. The great interest of this bailey is its ancient Norman gateway. The entrance was regarded by mediæval architects as the weakest part of the fortress, and we frequently find that it was the first part to receive stone defences.[495] It is not surprising that at such an important place as Lewes, which was then a port leading to Normandy, and at the castle of so powerful a noble, we should find an early case of stone architecture supplementing the wooden defences. But the two artificial mottes have no masonry that can be called early Norman. Lewes is one of the boroughs mentioned in the _Burghal Hidage_, and was a _burgus_ at the time of the Survey.[496] The value of the town had increased by £1, 18s. from what it had been in King Edward's time. [Illustration: FIG. 20. LINCOLN.]