Castle Howard trees and plants from across the world is set in a beautiful landscape of parkland, lakes and ponds. The charitable trust that runs the Yorkshire Arboretum also manages Ray Wood. The house is Grade I listed and there are many other listed structures on the estate, several of which are on the Heritage at Risk Register. In addition to its most famous appearance in film as Brideshead in both the 1981 television serial and 2008 film adaptations of Evelyn Waugh's novel "Brideshead Revisited", Castle Howard has been used as a backdrop for a number of other cinematic and television settings.
Castle Howard one of the largest country houses in England, with a total of 145 rooms. According to figures released by the Association of Leading Visitor Attractions, nearly 220,000 people visited Castle Howard in 2010. In 2009 an underwater ground-source heat recovery system was installed under the castle's lake that halved the heating bill. Castle Howard has extensive and diverse gardens. There is a large formal garden immediately behind the house. The house is prominently situated on a ridge and this was exploited to create an English landscape park, which opens out from the formal garden and merges with the park. Two