include masterpieces by Botticelli and Domenico Veneziano, as well as works by a significant number of Spanish painters, El Greco and Goya among them. Lehman's collection of drawings by the Old Masters, featuring works by Rembrandt and Dürer, is particularly valuable for its breadth and quality. Princeton University Press has documented the massive collection in a multi-volume book series published as The Robert Lehman Collection Catalogues. Medieval art and the Cloisters The Met's collection of medieval art consists of a comprehensive range of Western art from the 4th through the early 16th centuries, as well as Byzantine and pre-medieval European antiquities not included in the Ancient Greek and Roman collection. Like the Islamic collection, the Medieval collection contains a broad range of two- and three-dimensional art, with religious objects heavily represented. In total, the Medieval Art department's permanent collection numbers over 10,000 separate objects, divided between the main museum building on Fifth Avenue and The Cloisters. Main building The medieval collection in the main Metropolitan building, centered on the first-floor medieval gallery, contains about 6,000 separate objects. While a great deal of European medieval art is on display in these galleries, most of the European pieces are concentrated at the Cloisters (see below). However, this allows the main galleries to display much of the Met's Byzantine art side by side with European pieces. The main gallery is host to a wide range of tapestries and church and funerary statuary, while side galleries display smaller works of precious metals and ivory, including reliquary pieces and secular items. The main gallery, with its high arched ceiling, also serves double duty as the annual site of the Met's elaborately decorated Christmas tree. The Cloisters museum and gardens The Cloisters was a principal project of John D. Rockefeller, Jr., a major benefactor of the Met. Located in Fort Tryon Park and completed in 1938, it is a separate building dedicated solely to medieval art. The Cloisters collection was originally that of a separate museum, assembled by George Grey Barnard and acquired in toto by Rockefeller in 1925 as a gift to the Met. The Cloisters are so named on account of the five medieval French cloisters whose salvaged structures were incorporated into the modern building, and the five thousand objects at the Cloisters are strictly limited to medieval European works. The collection features items of outstanding beauty and historical importance; including the Belles Heures