Pieter Bruegel (c.1525-69) was perhaps the greatest sixteenth-century Flemish painter and he is certainly the most popular today. Surprisingly, fewer than fifty of his works have survived, though his episodes from peasant life, landscapes and religious paintings are familiar to all. To each of these themes Bruegel brought remarkable gifts of observation, an unfailing sense of line and a dazzling use of colour. The gaity and heartiness of his scenes...