Illuminated manuscripts and stained-glass windows had become important art forms in northern Europe during the Middle Ages. However, painting and mosaic continued to flourish in Italy, as they had since antiquity.
The work of one Italian painter, Giotto, marks a dramatic change in Italian painting. His frescoes in the Arena Chapel in Padua, painted in 1305-06, show the extent of his achievement. The figures in the paintings are modeled and shaded rather than merely outlined, and they have the solidity and weight of sculpture. More powerfully than ever before, the figures communicate human emotion through their gestures and facial expressions. Giotto's work looked forward to the painting style of the Renaissance.
Painting on wood panels flourished in Siena and Florence, two rival cities in central Italy. Siena experienced a golden age of art during the 1300's, when it was one of the largest and richest cities in Europe. Sienese painters loved to work with bright colors and gold decoration and to portray luxurious clothing. Finished paintings were set into richly carved and gilded frames that were capped by pointed Gothic arches.
Among the most innovative Sienese painters were Duccio de Buoninsegna, Simone Martini, and the brothers Pietro and Ambrogio Lorenzetti. The work of these painters incorporated influences from both Byzantine and Gothic art.
Duccio painted a famous altarpiece, called the Maesta (1308-11), for Siena Cathedral. The painting, with its expressive figures of the Virgin and Child, was revolutionary for its time. Duccio's pupil, Simone Martini, preferred to work in the International Gothic style of northern Europe. His elegant figures are also emotionally expressive. The Lorenzetti brothers were fresco painters who were skilled at creating the illusion of space in their paintings. Ambrogio's panoramic views of town and countryside in his fresco The Effects of Good and Bad Government (1338-40) show his ability to depict large-scale outdoor scenes.
More than half the population of Siena perished in the Black Plague of 1348, and the city never recovered its status. By the late 1300's its rival, Florence, had emerged as the center of the early Renaissance.