Club Mass NYC has risen to nightclub infamy just as a phoenix rises from the ashes. Formally known as Octagon NYC is NYC’s newest and hottest nightclub and lounge. The location that was once a mega staple of New York nightlife is again bursting with life. Mass Night Club is Located at 301 West 39th Street NY 10018 in Manhattan’s famous Hell’s Kitchen District is conveniently located 2 blocks away from NYC’s Times Square.