Introduction to the Central Hall: The Central Hall is located in the center of the station, where the ticket booths and information desks are located. After the September 11th terrorist attacks, an American flag was hung in the lobby to symbolize the common emotions and memories of New Yorkers. The four-faced clock above the information center is considered the highlight of Grand Central Station and is also the most commonly used meeting place for New Yorkers. The dial of the clock is made of cat's eye stone, which is priceless.