estate in a number of ways. He organised an early demonstration of steam ploughing, built a private railway and used portable steam engines in the sawmill and for pumping. Twentieth century During the First World War Grimsthorpe Park was used by the Royal Flying Corps and Royal Air Force as an emergency landing ground. During the Second World War the central part of the park, near the Vaudey Abbey site, was used as a bombing range. In 1944 the castle housed a company of the Parachute Regiment while it was recovering from operations in Italy and training for what became Operation Market Garden. Their flight for Arnhem began from RAF Folkingham. Grimsthorpe and Drummond castles are now owned and managed by a trust. Art collection A life-sized Francisco de Zurbarán portrait of Benjamin hangs at Grimsthorpe; it is the sole painting that has been separated from the Zurbarán series Jacob and his twelve sons preserved at Auckland Castle in Bishop Auckland, County Durham. There is a copy of Benjamin at Bishop Auckland. References External links Official site Flickr images tagged Grimsthorpe Castle Country houses in Lincolnshire John Vanbrugh buildings English Baroque architecture Gardens in Lincolnshire Parks and open spaces in Lincolnshire Historic house museums in Lincolnshire Grade I listed buildings in Lincolnshire Gardens by Capability Brown Woodland gardens