I just finished The Invention of Hugo Cabret, and I really enjoyed it. It's a children's book about an orphaned boy in 1930s Paris who has a gift with machines, but it uses gorgeous charcoal drawings to help tell the story. Someone described it as a silent film on paper, which is both a great description and very appropriate as the book deals with early silent films, among other things. Younger kids or non-readers shouldn't be put off by its huge size. With all the pictures, I could've devoured it an an hour, easily.
It's a work of art, and I would recommend it for children and adults alike.