High above the busy streets of Manhattan’s West Village, at 719 Greenwich Street, a secret world blooms where no one expects it. From the sidewalk below, the brick loft building looks like so many others in the neighborhood. But if you lift your gaze to the rooftop, you’ll find something whimsical and entirely out of place: a rustic wooden cabin, perched among a patch of meadow grasses, as though a piece of the countryside had drifted down and landed on the city. The cottage