Lincoln

Built by the Romans, looted by the Danes and conquered by King William I (who devastated the town to build a castle and a cathedral), the city of Lincoln has had a long and most dreadful history. Containing medieval child murder, vile sieges of (and escapes from) the castle, the savage repression of the Lincolnshire rising by King Henry VIII (who had the ringleaders hanged, drawn and quartered) and plagues, lepers, prisons, riots, typhoid, tanks and terrible hangings by the ton, you'll never see the city in the same way again.