The great red brick tower at Tattershall reaches a height of 30.5 metres (100ft) and is a prominent feature in the local landscape, as well as a graphic symbol of the power of one man. It was built for Ralph, Lord Cromwell, in the years 1434-46. Cromwell was a wealthy and ambitious man who had been an adviser to Henry V and who became Lord Treasurer to Henry VI. He was to use the rewards of his high office to build what is now considered to be one of the best examples of medieval brickwork in the country.