The first time travel novel, published a few years before The Time Machine. I have read about a quarter of it and its ideas about science are... not very precise (taking into account when it was written, of course). This novel is more of a social satire than true science fiction, and it is a proto-science fiction novel. This edition of the book also has other short stories that are not related to the main one, so we will see.

On the other hand, the non science bits of the novel (that I have read) are nicely written and with great knowledge of history and society, so it looks like an interesting read at least.