Once the tiltyard for jousting tournaments, Horse Guards Parade is best known for the annual Trooping the Colour ceremony, in which the Queen takes the salute on her official birthday tribute, on the second Saturday in June. (Though it's called a birthday it's actually the anniversary of her coronation—her real birthday is April 21.) It's a must-see if you're around, with marching bands and throngs of onlookers. Throughout the rest of the year, the changing of two mounted sentries known as the Queen's Life Guard at the Whitehall facade of Horse Guards provides what may be London's most popular photo opportunity. The ceremony takes place daily from April to July, and on alternate days from August to March (usually odd numbered days, but check the monthly schedule at www.householddivision.org.uk/changing-the-guard-calendar). It starts at 11 am at St. James' Palace, where the guard begins its march to Buckingham Palace, and the new guards take up their posts in a ceremony at 11:30. (It's
sometimes cancelled in bad weather). At 4 pm daily is the dismounting ceremony, aka the 4 O'Clock Parade, during which sentries are posted and horses are returned to their stables. It began in 1894, when Queen Victoria discovered the guards on duty drinking and gambling. As a punishment she decreed that the regiment should be inspected every day at 4 pm for the next 100 years.