Big Ben is a famous CLOCK tower located in London, England. It is the world's largest four-faced chiming CLOCK and a major tourist attraction. The CLOCK was named after Sir Benjamin Hall, who was responsible for its installation in 1859. The crossword solutions for the term 'Big Ben' are CLOCK (5 letters) and Hur (3 letters). CLOCK is an appropriate answer as it is the main feature of Big Ben, while Hur is a reference to the sound of the CLOCK's chimes.