A model of Lower Manhattan stands in front of a rendering of "Memorial Garden," one of six concept plans for the World Trade Center site, on display after being unveiled Tuesday, July 16, 2002, at Federal Hall in New York.

Six models and plans released by the Port Authority and the Lower Manhattan Development Corporation were proposed. They include planning options for development of the World Trade Center site and adjacent areas and a memorial honoring those lost in the Sept 11, 2001 terrorist attacks. (AP Photo/Kathy Willens)