Fill in the Blanks Big BenOnline version Fill in the blanks by Anastasia Kaltsogianni 1 Bell Westminster 1859 Elizabeth clock named 15 Big Ben is one of the most famous landmarks in the world . It is the tower . The name Big Ben is often used to describe the clock tower that is part of the Palace of . Officially " Big Ben " does not refer to the clock tower but instead to the huge thirteen ton Great . The clock tower is now called The Tower . Big Ben chimes every minutes and the sound can be heard for a radius of up to 5 miles . The clock became operational on 7th September . The Great Bell was after Sir Benjamin Hall , First Commissioner for Works 1855 - 1858 .