Big Ben is the nickname for the large bell located in the clock tower of the Houses of Parliament in London, England. It is the largest four-faced chiming clock and third tallest free-standing clock tower in the world. The clock first became operational on September 7, 1859 and its four clock faces are 55 meters above ground level, with an inscription at the base honoring Queen Victoria.

1. Big Ben

2. Big Ben is the nickname for the great
bell of the clock in London. Big Ben is
the largest four-faced chiming clock
and the third-tallest free-standing
clock tower in the world.

3. The clock became operational on 7th
September 1859.

4. The four faces of the clock are 55
meters above ground

5. At the base of each clock face is
written.
"O Lord, keep safe our Queen
Victoria the First"