2009 saw the 150th anniversary of the Elizabeth Tower, the Great Clock and the Great Bell, also known as Big Ben. Here are some highlights from the year's celebrations.
The Big Ben anniversary team
The Big Ben Christmas card competition attracted entries from over 400 children from 100 constituencies. National winners visited Parliament and were presented with prizes at a reception. The overall winning design was one of the Speaker's official Christmas cards for 2009.
400 clock and bell fans from all over the UK were welcomed for tours of the Elizabeth Tower during the Enthusiasts' Weekend in July. The anniversary of Big Ben's first strike on 11 July was marked with a light projection.
'Parliament's Clock: Big Ben at 150' opened in Portcullis House with almost 3000 members of the public visiting the exhibition during Open House Weekend.
Big Ben's anniversary year recieved extensive media coverage at home and abroad, connecting Big Ben with a wide range of audiences it included features on Blue Peter and The Paul O'Grady Show.