Crystal Symphony at Québec, Canada on September 21, 2011. Photo © Bart de Boer

  Crystal Symphony at Bar Harbor, Maine on September 17, 2011. Photo © Bart de Boer

  Crystal Symphony at New York City, New York on September 13, 2011. Photo © Bart de Boer

  Crystal Symphony at Haines, Alaska on July 26, 2011. Photo © Mike Taplin

  Crystal Symphony at Juneau, Alaska on July 24, 2011. Photo © Ouyang Guangyan

  Crystal Symphony at San Francisco, California on April 12, 2011. Photo © Jake Tomlinson

  Crystal Symphony at Mazatlan, Mexico on December 8, 2010. Photo © Ricardo David Zatarain Garcia

  Crystal Symphony at Québec City, Canada on October 24, 2010. Photo © Eric Coulombe

  Crystal Symphony at Flaam, Norway on July 24, 2010. Photo © Kjell Christian Andersen

  Crystal Symphony at Warnemünde, Germany on July 10, 2010. Photo © Andreas Raap

  Crystal Symphony at Lisbon, Portugal on June 8, 2010. Photo © Rui Agostinho

  Crystal Symphony at Sydney, Australia on April 10, 2010. Photo © Robert Winslow

  Crystal Symphony at Picton, New Zealand on April 3, 2010. Photo © Mike Taplin

  Crystal Symphony at Melbourne, Australia on March 20, 2010. Photo © Vincenzo Taranto

  Crystal Symphony at Liverpool, United Kingdom on August 29, 2009. Photo © Trevor Dry

  Crystal Symphony at Longyearbyen, Spitsbergen, Norway on July 20, 2009. Photo © Rainer Rosenow

  Crystal Symphony at Oslo, Norway on June 21, 2009. Photo © Eigil Olsen

  Crystal Symphony at Copenhagen, Denmark on August 30, 2008. Photo © Michael Bragg

  Crystal Symphony at Stockholm, Sweden on August 22, 2008. Photo © Roland Edström

  Crystal Symphony at Gdynia, Poland on August 14, 2008. Photo © Wlodzimierz Kociecki

  Crystal Symphony at Liverpool, United Kingdom on July 20, 2008. Photo © Peter Roberts

  Crystal Symphony at Alexandria, Egypt on May 23, 2008. Photo © Michael Bragg

  Crystal Symphony at Muscat, Oman on May 7, 2008. Photo © Michael Bragg

  Crystal Symphony at Québec City, Canada on October 4, 2007. Photo © Victor Ross

  Crystal Symphony at Velsen-Zuid, Netherlands on August 14, 2007. Photo © Jan Ramaker

  Crystal Symphony at Velsen-Zuid, Netherlands on August 14, 2007. Photo © Jan Ramaker

  Crystal Symphony at Buitenhuizen, Netherlands on August 13, 2007. Photo © Antoni van Dam

  Crystal Symphony at Geiranger, Norway on June 30, 2005. Photo © Mike Taplin

  Crystal Symphony at Velsen-Zuid, Netherlands on July 12, 2003. Photo © Bart de Boer