Wuthering Heights is a wonderful book.

I don't have much more to say about it than that. Halfway into it, I thought "wait, this isn't a romance novel, it's a grotesque almost-gothic revenge thriller combined with Emily Bronte shrieking about how much she hates living in the country." By the end, I realised that it is a romance novel, but so exceptionally well-done, realistic and believable you don't notice.