The world's largest 4-faced clock sits atop Elizabeth Tower, the north tower of the Palace of Westminster. The tower was so named this past summer in honor of the Diamond Jubilee of Elizabeth II. The tower, of course, also houses the gigantic bell known as Big Ben. It's one thing to see this tower in photographs, but it's quite another emotional event to stand across the street and look up at it. London, UK; September, 2009.