After a quarter-century housed first at a high school and later in a Soho loft building, “[o]n Friday, Poets House opens its spacious new home in Battery Park City hard by the Hudson River … Glass walls surround the entryway – in which a Calder mobile floats – and enclose the second-floor exhibition space. … The staircase is wired for sound, so when people pass, a motion sensor might trigger a spoken line from a poet like Robert Frost.”