Clock Building is a concept developed in the book Built to Last. A tall, narrow building with a clock at the top.Big Ben, London's famous clock tower, is located near the Houses of Parliament. Nobody cared about real estate and they thought I was crazy for bringing it up. A list of permanent working clocks with the largest faces in the world. Entries include all clocks with faces at least 4 m (13 ft) in diameter. Each clock on the building is 26.5 feet in diameter; each number measures 4 feet in height. The minute hands alone weigh half a ton each. Big Ben is a famous clocktower and landmark in London, England. It is located atop Elizabeth Tower, which is located on the northern side of Westminster Palace.