Twenty thousand leagues under the sea - the original classic edition
This is Jules Verne's classic tale of undersea adventure, based on the 1873 translation by Lewis Mercier. Since that's been the standard English translation for over a hundred years, it's probably the one you remember reading way back when, and the edition you'll be familiar with. Re-reading this as an adult, and an adult who's spent twenty-plus years since then reading science fiction, I did have to remind myself more than once how amazing th...