Big Ben (Explore 10/2/12)
Big Ben is one of London's most iconic landmarks.
Technically, Big Ben is the massive bell inside the clock tower, which weighs more than 13 tons (13,760 kg).
The clock tower looks spectacular at night when the four clock faces are illuminated.
•Each dial is 7 metres in diameter
•The minute hands are 4.2 metres long and weigh about 100kg (including counterweights)
•The numbers are approximately 60cm long
•There are 312 pieces of glass in each clock dial
A special light above the clock faces is also illuminated, letting the public know when parliament is in session.