The biggest, brightest jewel in Chicago's architectural crown belongs not to some glass and steel skyscraper, but to an historic office building with wedding cake flair and a clock tower. The Wrigley Building is actually two buildings joined by a 14th floor skywalk and a street-level arcade. Its gleaming white facade is an icon of the city, even when the quarter million terra cotta tiles are lit in different colors by banks of floodlights. The clock occupies the 25th and 25th floors of the building. The clock faces are 19 feet, seven inches wide.The clock hands are made of redwood and are designed to bend in the wind. Its "big" hands are nine feet, two inches long and the "little" hands are six feet, four inches long.