There is a parallel system for ancient monuments, known as 'scheduling', which means that there is not a consistent approach to sites like castles, abbeys and henges, which may be listed, scheduled or both.
[1] Estimates to the numbers of buildings do, however, vary given that separate listings apply to structurally separate buildings: therefore a street of houses can be listed as one building, but a church wall can be listed separately from the church.
[3] There is a characteristically large contribution from Church of England (Anglican) parish churches, and several great English country houses are included with some of their landscaping features.
Several barns are included, and Crofton Pumping Station is associated with water supply.
Media related to Grade I listed buildings in Wiltshire at Wikimedia Commons
