Tower of Voices The Flight 93 National Memorial stands in a field in Shanksville, Pa. The Tower of Voices is conceived as a monumental, 93 feet tall musical instrument holding forty wind chimes, representing the forty passengers and crew members that died in the attack on 9/11. SHARE: Download: Full Size (0.11 MB) Tags: 9/11 Credit: C. Claycomb, National Park Service VIRIN: 210901-O-D0439-001.JPG Photo Gallery