Taj Mahal The Parthenon Empire State Building The Brooklyn Bridge Hoover Dam The Panama Canal The Roman Colosseum The Great Pyramid Tikal The Great Wall Machu Picchu John Wesley Powell The Last River Henry Hudson Beyond the Sea of Ice La Salle Despite All Obstacles Cabeza De Vaca We Asked For Nothing De Gama A Long and Uncertain Journey Magellan Magellan's World Over The Rivers: An Aerial View of Geology Over The Mountains: An Aerial view of Geology Hear an interview with author/photographer Michael Collier and see a slide show of his stunning images: npr.org Rescued Images Memoirs of a childhood in hiding The Adventures of Sojourner The mission to mars that thrilled the world Canyon