If you’re passing through Grand Central, take a moment and stop at the Transit Museum’s Grand Central Annex (and shop) to see the 15th Annual Holiday Train Show. This year’s model trains will travel a 34-foot long O gauge model track, travelling between Grand Central and the North Pole.
You can watch a video from the 2012 show here.
The Annex is open 8 AM – 8 PM Monday-Friday, and 10 AM – 6 PM Saturday and Sunday; closed major holidays and for special events.