
Elephant, Savuti, Botswana, 1994 digital chromogenic print, printed 2013 image size: 20 by 24 inches, sheet size: 25 by 29 inches, one from an edition of 20. (Beverly Joubert/National Geographic/Christie's Images)

Mosque of Hassan II, Casablanca, 2005 digital chromogenic print, printed 2013 image size: 20 by 24 inches, sheet size: 25 by 29 inches, one from an edition of 20. (Annie Griffiths/National Geographic/Christie's Images)

Giraffes and blue wildebeests, Masai Amboseli National Park, Kenya, 2011 digital chromogenic print, printed 2013 image size: 20 by 24 inches, sheet size: 25 by 29 inches, one from an edition of 20. (Beverly Joubert/National Geographic/Christie's Images)

Tibetan girl, Tibet, 2008 digital chromogenic print, printed 2013 image size: 16 by 20 inches, sheet size: 21 by 25 inches, one from an edition of 20. (Alison Wright/National Geographic/Christie's Images)

Lion Cub, Africa, 2001 digital chromogenic print, printed 2013 image size: 20 by 30 inches, sheet size: 25 by 35 inches, one from an edition of 20. (Beverly Joubert/National Geographic/Christie's Images)

Venice, 2008 digital chromogenic print, printed 2013 image size: 20 by 24 inches, sheet size: 25 by 29 inches. (Jodi Cobb/National Geographic/Christie's Images)

Swayambhunath Stupa, Katmandu, Nepal, 2000 digital chromogenic print, printed 2013, image size: 16 by 20 inches, sheet size: 21 by 25 inches, one from an edition of 20. (Maggie Steber/National Geographic/Christie's Images)

Adirondack Mountains, New York, 1996 digital chromogenic print, printed 2013 image size: 20 by 30 inches, sheet size: 25 by 35 inches, one from an edition of 20. (Maria Stenzel/National Geographic/Christie's Images)

China, 1989 digital chromogenic print, printed 2013, image size: 20 by 16 inches, sheet size: 25 by 21 inches, one from an edition of 20. (Jodi Cobb/National Geographic/Christie's Images)

Fighting Stallions, Lantry, South Dakota, 2007 digital chromogenic print, printed 2013, image size: 20 by 24 inches, sheet size: 25 by 29 inches, one from an edition of 20. (Melissa Farlow/National Geographic/Christie's Images)

Empty Road, 2001 digital chromogenic print, printed 2013 image size: 20 by 24 inches, sheet size: 25 by 29 inches, one from an edition of 20. (Sisse Brimberg/National Geographic/Christie's Images)

Hansekogge, a Restored Hanseatic Freighter, Roskilde Fjord, Denmark, 1991 digital chromogenic print, printed 2013 image size: 20 by 24 inches, sheet size: 25 by 29 inches, one from an edition of 20. (Sisse Brimberg/National Geographic/Christie's Images)