Perpendicular nave is flanked at the west front
by towers, whose massive buttresses, rising in tiers, serve to enhance
by contrast the beautiful effect of the unbroken straight lines of Bell
Harry tower. The south-western of these towers is an original
Perpendicular structure by Prior Goldstone, while the north-western was
copied from it in 1834-1840, replacing a Norman tower which had carried
a spire until 1705 and had become unsafe. The north-west and south-west
transepts are included in Chillenden's Perpendicular reconstruction; but
east of these earlier work is met with. The south-east transept exhibits
Norman work; the projecting chapel east of this is known as Anselm's
tower. The cathedral terminates eastward in a graceful apsidal form,
with the final addition of the circular eastern chapel built by William
the Englishman, and known as the Corona or Becket's Crown. St Andrew's
tower or chapel on the north side, corresponding to Anselm's on the
south, is the work of Ernulf. From this point westward the various
monastic buildings adjoin the cathedral on the north side, so that the
south side is that from which the details of the exterior must be
examined.

Interior.

When the nave of the cathedral is entered, the complete separation of
the interior into two main parts, not only owing to the distinction
between the two main periods of building; but by an actual structural
arrangement, is realized as an unusual and, as it happens, a most
impressive feature. In most English cathedrals the choir is separated
from the nave by a screen; at Canterbury not only is this the case, but
the separation is further marked by a broad flight of steps leading up
to the screen, the choir floor (but not its roof) being much higher than
that of the nave. Chillenden, in rebuilding the nave, retained only the
lower parts of some of the early Norman walls of Lanfranc and the piers
of the central tower arches. These piers were encased or altered on
Perpendicular lines. In the choir, the late 12th-century work of the two
Williams, the notable features are its great length, the fine
ornamentation and the use of arches both round and pointed, a remarkable
illustration of the transition between the Norman and Early English
styles; the prolific use of dark marble in the shafts and mouldings
strongly contrasting with the light stone which is the material
principally used; and, finally, the graceful incurve of the main arcades
and walls at