Between the Bara Imambara and Chhota Imambara is the Clock Tower of Lucknow. This huge tower was constructed by Nawab Nasir-ud-Din Haider in the year 1880. The Clock Tower in Lucknow reaches upto a staggering height of 221 feet and is the tallest Clock Tower in India. The Clock tower also has the biggest fitted clock that cost the government around Rs. 1.75 lakhs at that time.