Journey to the Center of the Earth is an 1864 science fiction novel by Jules Verne. One of the top classic books, the story involves a German professor (Professor Von Hardwigg) who believes there are volcanic tubes going toward the center of the Earth. He, his nephew (Harry), and their Icelandic guide Hans encounter numerous adventures, including prehistoric animals and natural hazards, eventually coming to the surface again in southern Italy. Verne is able to not only entertain but also educate his readers. By placing the different extinct creatures the characters meet in their correct geological era, he is able to show how the world looked a long time ago, stretching from the ice age to the dinosaurs. Journey to the Center of the Earth is truly a classic science fiction adventure story.