Tour the Hidden Art Gallery on the High Line's Last Unfinished Stretch

It's easy to forget that beyond the tourist- and greenery-covered High Line, there are still 300 yards of old, rusting train track. This last patch of decaying NYC railway will soon be turned into the final stretch of the super-successful park—but for now, they're home to a little-known outdoor gallery. » 1/19/14 11:00am 1/19/14 11:00am