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Kensington Palace is a royal residence set in Kensington Gardens. It has been a residence of the Royal Family since the 17th century. Today it is the official residence of The Duke and Duchess of Gloucester; the Duke and Duchess of Kent; and Prince and Princess Michael of Kent. Kensington Palace is also used on an unofficial basis by Prince Harry, as well as his cousin Zara Phillips.

It was the official residence of Diana, Princess of Wales (until her death in 1997), of Princess Margaret (until her death in 2002) and of Princess Alice (until her death in 2004).

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Hyde Park is one of the largest parks in central London and one of the Royal Parks. Hyde Park is 142 hectares (350 acres) and is divided in two by the Serpentine.
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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%)

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Grade I listed buildings and structures are of exceptional, even international importance. There are over 6,000 in the country. Only 2.5% of listed buildings are Grade I listed.
In Scotland the classification is Category A
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