The memorial at the site of the World Trade Center has been chosen. It will be a teeming grove of trees above two deep reflecting pools within the outlines of the twin towers. “The announcement followed weeks of contentious debate in a city whose citizenry quickly scrutinized the eight finalists’ plans. The discussion underscored the difficulty of choosing one from the total of 5,201 entrants in the competition for a memorial that would encompass heroic sacrifice and unfathomable loss.”