REFLECTING ABSENCE. A pair of reflective pools, their surfaces broken by large voids meant to represent the absence caused by the attacks, marks the location of the towers' footprints. As visitors move through the sloped buildings that border the pools, they experience a gradual move from cool darkness and silence to slivers of daylight and the sound of falling water, until they are standing in front of a curtain of water, through which they can see the victims’ names. Reflecting Absence is meant to be a meditative space and includes an alcove where visitors can light a candle, the unidentified-remains area for family members only, as well as pine trees at street-level that provide shade for visitors. [Aerial view from Southeast]