Yes, Because the part of the sentence "Although it is pretty" won't be able to function on it's own as a proper sentence. However the sentence "winter isn't as pretty as fall", Is a independent clause at the end of the sentence. Hope I helped, Look at the images, It will help! :D
Life of Pi<span> even flirts with nonfiction genres. The Author's Note, for example, claims that the story of Piscine Molitor Patel is a true story that the author, Yann Martel, heard while backpacking through Pondicherry, and the novel, with its first-person narrator, is structured as a memoir.</span>
