The Grand Central Terminal at New York City is a magnificent building. It is amazingly busy yet very organized. I feel so much like being in a movie when I am there..
The clock in front of the Grand Central facade facing 42nd Street contains the world’s largest example of Tiffany glass and is surrounded by sculptures carved by the John Donnelly Company of Minerva, Hercules and Mercury. For the terminal building French sculptor Jules-Alexis Coutan created what was at the time of its unveiling (1914) considered to be the largest sculptural group in the world. It was 48 feet (14.6 m) high, the clock in the center having a circumference of 13 feet (4 m).
The main information booth is in the center of the concourse. This is a perennial meeting place, and the four-faced clock on top of the information booth is perhaps the most recognizable icon of Grand Central. Each of the four clock faces are made from opal, and both Sotheby’s and Christie’s have estimated the value to be $10m-$20m.
The large American flag was hung in Grand Central Terminal a few days after the attacks on the World Trade Center on September 11, 2001
I think this is not really in the itinerary of most travel groups so you probably want to go on a self tour of New York to see Grand Central Terminal :)