Cow Tower, Norwich Cow Tower, Norwich The Cow Tower is an artillery tower by the River Wensum in Norwich, Norfolk, England. Built between 1398 and 1399 by the city authorities in response to the threat from France and indigenous English rebels, the tower was intended to defend the north-eastern approach to Norwich with hand cannons and bombards. It stood apart from the main city walls, close to the river where its height would have allowed it to fire onto the higher ground opposite the city. The tower was designed to hold a garrison when required and was well furnished, probably using different floors
Norwich Castle landed in England in May 1174, and 500 of his own men, Bigod advanced on Norwich Castle. They captured it and took fourteen prisoners who were held for ransom. When peace was restored later that year, Norwich was returned to royal control. The Normans introduced the Jews to Norwich and they lived close to the castle. A cult was founded in Norwich in the wake of the murder of a young boy, William of Norwich, for which the Jews of the town were blamed. In Lent 1190, violence against Jews erupted in East Anglia and on 6 February (Shrove Tuesday)