Head towards Grand Central Station. There you will encounter the Hercules, Mercurius, and Minerva sculptural group atop the station. If you are following along on our art map this should be labeled 64. As you walk into the Main Concourse of Grand Central, the most notable feature is the great astronomical mural (56 on the art map), from a design by the French painter Paul Helleu, painted in gold leaf on cerulean blue oil.