Last summer I announced a preview for a new website on Jan and Hubert van Eyck’s Polyptych of the Mystic Lamb, commonly called the Ghent Altarpiece. The completed site, called “Closer to Van Eyck: Rediscovering the Ghent Altarpiece,” is now online. Created by the Royal Institute for Cultural Heritage in Brussels, Belgium, and funded by a grant from the Getty Foundation, this site lets you explore this Early Netherlandish masterpiece up close. In addition to high-resolution macrophotography that allows you to zoom in on minute details, there are also x-rays and infrared images that allow you to look beneath the surface of the paint. The Royal Institute for Cultural Heritage has been one of the pioneers in such technical examinations of works of art since the 1950s.