53-foot long Times Square Mural, by Roy Lichtenstein, a gift to the city in 1994, but not displayed until 2002.
"Twelve years ago the Metropolitan Transportation Authority’s Arts for Transit program commissioned Roy Lichtenstein to create a mural for the Times Square subway station. A native New Yorker who had ridden the subway since boyhood, Lichtenstein jumped at the chance to create a work of public art. So he designed a 6-foot-tall, 53-foot-long porcelain enamel futuristic vision of New York, which he decided to make a gift to the city."
From HERE & HERE