The term plague cross can refer to either a mark placed on a building occupied by victims of plague; or a permanent structure erected, to enable plague sufferers to trade while minimising the risk of contagion. A wide variety of plague cross existed in Britain and elsewhere in Europe, until the plague largely disappeared by the eighteenth century. Additionally, the term "plague cross" can specifically refer to the "Plague Cross of Saint Zacharias of Jerusalem", a Western Christian sacramental invoking God's protection against diseases and plagues that often takes the form of a cross necklace or a wall cross.[1]