St James's Palace built
1536 CE.
Shown on the map at 51.505°, -0.138°.
St James's Palace is the most senior royal palace in London, England. The palace gives its name to the Court of St James's, which is the monarch's royal court, and is located in the City of Westminster. Although no longer the principal residence of the monarch, it is the ceremonial meeting place of the Accession Council, the office of the Marshal of the Diplomatic Corps, and the London residence of several members of the royal family. Built by order of King Henry VIII in the 1530s on the site of an isolated leper hospital dedicated to Saint James the Less, the palace was secondary in importance to the Palace of Whitehall for most Tudor and Stuart monarchs. Initially surrounded by a deer park and gardens, it was generally used as a hunting lodge and as a retreat from the formal court and occasionally as a royal guest house. After the Palace of Whitehall burned down, the palace took on administrative functions for the monarchy. It increased in importance during the reigns of the Hanoverian monarchs but began to be displaced by Buckingham Palace in the early 19th century.
Text from the Wikipedia article St James's Palace, licensed CC BY-SA 4.0.