This is the sort of book, if not the very book, that will continue to stand the test of time.
Knowing that this was written before the invention of the submarine, the lightbulb, and scuba gear just makes TTLUtS that much more amazing. Captain Nemo is the sort of character that becomes legendary and immortal, and the fact that he remains a mystery at the end of the novel is something that stays with the reader.
Brilliant, simply brilliant. If you haven't read this book, please do so, for your own benefit.