On the former site of Charity Hospital’s paupers’ field, this ominous but oddly affecting circle of tombs holds the bodies of 85 unclaimed victims of the 2005 levee failures and the names of others who perished. It’s an unfussy place that’s easily missed, the better for contemplative solitude, perhaps. Surrounded by a storm-shaped series of pathways, the memorial does its duty in giving one substantial pause.