I liked POSSESSION by A.S. Byatt. Read it years ago and it remains a favorite.

Maggie O'Farrell is a great writer. So is Sarah Waters; her books are historical fiction and feature lesbian relationships -- if that's not for you, well it's not for you. Another good one in that line is The Sealed Letter by Emma Donoghue. Finally, I loved Blindspot by Jane Kamensky and Jill Lepore -- they're both historians and the novel is a tribute to the novels of the late 18th century. It's set in pre-Revolutionary Boston. I second the Possession recommendation, too, along with Byatt's other novels and her novella/story collections, too.

Orlando - Virginia Woolf

The Children's Book - A.S. Byatt

Jane Eyre - Charlotte Bronte

Wuthering Heights - Emily Bronte