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Beningbrough Hall is a large Georgian mansion situated approximately 6 miles (10 km) north west of York, near the village of Beningbrough. It was built in 1716 by a York landowner, John Bourchier III to replace his family's modest Elizabethan manor. Bourchier was High Sheriff of Yorkshire between 1719 and 1721.

During the Second World War the hall was occupied by the Royal Air Force then latterly, the Royal Canadian Air Force, when under No 6 Group of Bomber Command, they took over some of the bases in the region (such as the nearby RAF Linton-on-Ouse and RAF Leeming). It was acquired by the National Trust after it had been accepted by the government in lieu of death duties following the death of its last private owner, Lady Chesterfield, in 1957.

Externally, the house is a red-brick Georgian mansion with a grand drive running to the main frontage and a walled garden. The Hall is set in extensive grounds and is separated from them by an example of a ha-ha (a sunken wall) to prevent sheep and cattle entering the Hall's gardens or the Hall itself. The hall is a Grade I listed building (List entry Number: 1150998 Link Historic England).

Link National Trust

Listed buildings and structures are officially designated as being of special architectural, historical or cultural significance. There are over half a million listed structures in the United Kingdom, covered by around 375,000 listings.
Listed status is more commonly associated with buildings or groups of buildings, however it can cover many other structures, including bridges, headstones, steps, ponds, monuments, walls, phone boxes, wrecks, parks, and heritage sites, and in more recent times a road crossing (Abbey Road) and graffiti art (Banksy 'Spy-booth') have been included.

In England and Wales there are three main listing designations;
Grade I (2.5%) - exceptional interest, sometimes considered to be internationally important.
Grade II* (5.5%) - particularly important buildings of more than special interest.
Grade II (92%) - nationally important and of special interest.

There are also locally listed structures (at the discretion of local authorities) using A, B and C designations.

In Scotland three classifications are also used but the criteria are different. There are around 47,500 Listed buildings.
Category A (8%)- generally equivalent to Grade I and II* in England and Wales
Category B (51%)- this appears generally to cover the ground of Grade II, recognising national importance.
Category C (41%)- buildings of local importance, probably with some overlap with English Grade II.

In Northern Ireland the criteria are similar to Scotland, but the classifications are:
Grade A (2.3%)
Grade B+ (4.7%)
Grade B (93%)

Read more at Wikipedia Link