eyck - The Ghent Altarpiece- St John the Evangelist. 1432. Oil on wood. 148.7 x 55.3 cm. Cathedral of St. Bavo, Ghent, Belgium eyck - The Ghent Altarpiece- St John the Evangelist. 1432. Oil on wood. 148.7 x 55.3 cm. Cathedral of St. Bavo, Ghent, Belgium