A good example of what the Victorians thought a medieval tower should look like can be found at the north angle of the defences behind the Minster.

This tower has been known by a variety of names. The Bawing Tower in 1370, Frost Tower in 1485 and Robin Hood Tower in 1622.
The present tower was built in 1888-89. It's circular and there are eight cruciform arrow slits in two neatly staggered rows. The outside is faced with neat limestone blocksand and the inside is built from concrete reinforced with tram-rails used as girders!