NORWICH (Fig. 23).--We find from Domesday Book that no less than 113 houses were destroyed for the site of this castle, a certain proof that the castle was new.[524] It is highly probable that it was outside the primitive defences of the town, at any rate in part. Norwich was built, partly on a peninsula formed by a double bend of the river Wensum, partly in a district lying south-west of this peninsula, and defended by a ridge of rising ground running in a north-easterly direction. The castle was placed on the edge of this ridge, and all the oldest part of the town, including the most ancient churches, lies to the east of it.[525] In the conjectural map of Norwich in 1100, given in Woodward's _History of Norwich Castle_,[526] the street called Burg Street divides the Old Burg on the east from the New Burg on the west; this street runs along a ridge which traverses the neck of the peninsula from south-west to north-east, and on the northern end of this ridge the castle stands.[527] There can be little doubt that this street marks the line of the _burh_ or enclosing bank by which the primitive town of Norwich was defended.[528] A clear proof of this lies in the fact that the castle of Norwich was anciently not in the jurisdiction of the city, but in that of the county; the citizens had no authority over the houses lying beyond the castle ditches until it was expressly granted to them by Edward III.[529] The mediæval walls of Norwich, vastly extending the borders of the city, were not built till Henry III.'s reign.[530] [Illustration: FIG. 23. Norwich. (From Harrod's "Gleanings among the Castles and Convents of Norfolk," p. 133.)] The motte of Norwich Castle, according to recent investigations, is entirely artificial;[531] it was originally square, and had "a prodigious large and deep ditch around it."[532] The fancy of the antiquary Wilkins that the motte was the centre of two concentric outworks[533] was completely disproved by Mr Harrod, who showed that the original castle was a motte with one of the ordinary half-moon baileys attached. Another ward, called the Castle Meadow, was probably added at a later date. The magnificent keep which now stands on the motte is undoubtedly a work of the 12th century.[534] The castle which Emma, wife of Earl Ralf Guader, defended against the Conqueror after the celebrated bride-ale of Norwich was almost certainly a wooden structure. As late as the year 1172 the bailey was still defended by a wooden stockade and wooden bretasches;[535] and even in 1225 the stockade had not been replaced by a stone wall.[536]