Scotland Yard, the headquarters of London's Metropolitan Police Service, was originally located in Great Scotland Yard off the north-eastern end of Whitehall. The buildings had been lodgings for the Kings of Scotland, on part of the old Palace of Whitehall's grounds; by the 19th century, Little and Middle Scotland Yard had been merged into Whitehall Place, leaving only Great Scotland Yard. No. 4 Whitehall Place had become vacant by the 1820s, which allowed Sir Robert Peel to use it as the main headquarters when forming the police in 1829. It was formally named the Metropolitan Police Office, but became quickly known as Great Scotland Yard, and eventually Scotland Yard. The buildings were damaged in a series of bombings by Irish Nationalists in 1883, and an explosion from a Fenian terrorist attack on 30 May 1884 blew a hole in Scotland Yard's outer wall and destroyed the neighbouring Rising Sun pub. The headquarters was moved away from Whitehall in 1890.