Journey to the Center of the Earth is a big classic scifi novel. Professor Lidenbrock finds a mysterious coded message in a recent purchase and his nephew Axel manages to decode it to find a way to the center of the earth. Times wasting so Professor Lindenbrock immediately packs up and leaves with Axel for an incredible adventure.
The book just isn't for me though. It's okay, but the style and datedness of the science. Granted, I wonder what some people will think of our scifi someday.