I'd recommend Jonathan strange and Mr norrel by Susanna Clarke if you fancy a historical fantasy that will keep you going for a while. It is about 2 magicans that bring the lost art of magic back to England during the Napelonic wars. It explores Faerie Folklore in a very interesting way and makes Fairies terrifying in a way they rarely are modern depictions.

The entire bibliography of Kazuo Ishiguro I'd say is worth your time but specially remains of the day. He has spent his entire career exploring memory and how we look back on our and has his own instinct style of unreliable narration.

Pale Fire by Vladmir Nabokov is an interesting novel in which the narrative takes place inside the Analysis of a poem by a friend of a poet that has recently died. Its a bit of a puzzle of a novel but I wouldn't say it's overly difficult.

The Private Memoirs and Confessions of a Justified Sinner by James Hogg is an interesting classic of Scottish literature about a Calvinist who commits terrible crimes that are justified through his religion. It has alot of unreliable and gives you the story from the main characters point of view as well as an outsiders point of view looking back on the events in the future so it's very interesting.

Neil Gaimans is great at short stories and has an interesting collection called smoke and mirror that has a great variety of different stories that mostly fantasy elements.

Anyway they are the books I enjoyed recently if any of those catch your interest.