Tribute World Trade Center is located less than fifty feet from Ground Zero. Its mission is to transmit the voices of the 9/11 community: victims' families, rescue workers, attack survivors, volunteers and downtown residents. This 6,000-square-foot, two-story, visitor and education center consists of five galleries featuring permanent and changing exhibitions, interactive displays, film and related public programs such as the Center's walking tours of the WTC site. The first floor galleries house the core permanent exhibit. Images, audio, video, and a model of the towers orient visitors; then timeline units invite visitors to ‘walk’ the events of February 26, 1993 and September 11, 2001. On the opposite wall is an expanse of blue that gradually fills with missing-person posters from floor to ceiling. A deformed piece of steel from the WTC site anchors the next gallery, devoted to rescue and recovery, which then leads to a more contemplative gallery in which the names of all victims are inscribed in glass and projected on a wall. This gallery houses mementoes and tributes sent by victim's relatives. The final gallery acknowledges the outpouring of support to New York City, and invites visitors to leave their own messages or tributes,” said marketing manager Erin Zielinski.