Big Ben (the Great Bell) and the Elizabeth Tower serve as iconic backdrops for key national events:
A spectacular display launched from the Thames, with Big Ben's chimes marking midnight before millions globally.
The King's official birthday parade (second Saturday in June) features 1,400+ soldiers, 200 horses, 400 musicians, and an RAF flypast viewed from Buckingham Palace.
May 8 and August 15 mark WWII victories; Big Ben tolls in remembrance.
Big Ben chimes specially (e.g., 33 times for William & Kate in 2011).
The bell tolls once per minute during processions for monarchs and eminent figures.
Note: Big Ben refers specifically to the 13.7-tonne bell; the tower was renamed Elizabeth Tower in 2012.