The Rock Island Bookmobile had three of them. I rather liked King Solomon's Mines (1885), but couldn't slog through Alan Quartermain (1887), and I wouldn't touch the novel called simply She (1886).
For obvious heteronormative reasons, it's his most popular novel, a "classic of imaginative literature" according to wikipedia.
The heteronormative, racist, imperialist plot: Professor Horace Holly, his young ward Leo, and their servant are shipwrecked in East Africa, and journey to the interior, where they run afoul of a lost civilization ruled by Ayesha, She-Who-Must-Be-Obeyed (or "She" for short).
She is immortal, and so beautiful, naturally, that any man who sees her is driven mad with desire.
See any gay subtexts yet?
Holly is hypnotized by Ayesha's beauty, like everyone else, but otherwise he displays no heterosexual interest. He has an avuncular interest in Leo that can often pass over into the homoerotic.
Leo is not really interested in Ayesha. In the end he chooses Holly over her.
There is no heterosexist boy-girl fade-out ending.
The most famous version (1965) starred Peter Cushing as Holly, John Richardson (top photo) as Leo, and Ursula Andress as She-Who-Must-Be-Obeyed.
En route they run afoul of a giant transvestite, effeminate Pretty Boy, who hosts a party for dancing werewolves, a gay-vague mad scientist, and a chair made of loincloth-clad men.