eyck - The Ghent Altarpiece- Niche with Wash Basin. 1432. Oil on wood. 213.5 x 36.1 cm (with Sibyl). Cathedral of St. Bavo, Ghent, Belgium eyck - The Ghent Altarpiece- Niche with Wash Basin. 1432. Oil on wood. 213.5 x 36.1 cm (with Sibyl). Cathedral of St. Bavo, Ghent, Belgium