Twenty Thousand Leagues Under the Sea by Jules Verne (1870)
Jules Verne was one of the first science fiction writers, and was a pretty big celebrity because of it. Despite his work all being in his native French, most of his work was already translated into many other languages during his life time, which was definitely a lot less common in the 19th century than it is today. Although Verne was more popular in his native France due to poor English translations early on, Verne’s reputation has seen a huge boost in the last few decades. His sci-fi stylings were almost as influential in the development of steampunk as a subgenre as H.G. Wells. Twenty Thousand Leagues Under the Sea is arguably his best sci-fi work.