This question was quite subjective because the thickest world famous works varied from person to person. However, you can refer to the following famous world masterpieces. Their lengths are all different: Harry Potter and the Sorcerer's Stone- 767 chapters Pride and Predict- 660 chapters 1984 - 670 chapters The Catcher in the Rye- 617 chapters The Three Bodies- 680 chapters One Hundred Years of Solitude- 720 chapters These famous novels were all relatively famous and had relatively large lengths. However, there were other famous works that were also very long, such as War and Peace, Dream of the Red Chamber, and One Hundred Years of Solitude. It was important to note that the length of a book was not the only standard. The readers 'evaluation of a masterpiece varied from person to person. Some people might think 1984 or The Catcher in the Rye is too depressing, while others might like them very much.