Big Ben is located in the 98-meter-high clock tower of the Houses of Parliament. It was built in 1859 and is a traditional landmark of London. Big Ben has four clock faces, each of which is inlaid with 312 pieces of milky white glass. Big Ben has been telling time for the City of London since 1859. Modeled on the Great St. Mary’s Church in Cambridge, Big Ben weighs 13.5 tons. Every bell that rings punctually is matched with the following words: “May God guide me forward”.