Clarence House

Clarence House is a royal residence in London, situated on The Mall, in the City of Westminster. It is attached to St. James's Palace and shares the palace's garden. For nearly 50 years, from 1953 to 2002, it was home to Queen Elizabeth The Queen Mother. It has since been the official residence of Charles, Prince of Wales, and Camilla, Duchess of Cornwall. Clarence House also served as the official residence for Prince William from 2003 until his 2011 marriage and for Prince Harry from 2003 until 2012. It is open to visitors for approximately one month each summer, usually August, and is one of many royal buildings in London.

Since 2003, the term "Clarence House" has often been used as a metonym for the Prince of Wales's private office. The term "St. James's Palace" had been previously used.

Clarence House is Grade I listed on the National Heritage List for England.

The house was built between 1825 and 1827 to a design by John Nash. It was commissioned by the Duke of Clarence, who in 1830 became King William IV of Great Britain and Ireland. He lived there in preference to the nearby St. James's Palace, which he found too cramped.

From William IV the house passed to his sister Princess Augusta Sophia and, following her death in 1840, to Queen Victoria's mother, Princess Victoria of Saxe-Coburg-Saalfeld. In 1866, it became the home of Queen Victoria's second son and fourth child Alfred, Duke of Saxe-Coburg and Gotha, also Duke of Edinburgh, until his death in 1900.

...
Wikipedia