I've begun reading The Name of the Rose, by Umberto Eco, his first novel. It's left a very good impression so far. It's a fourteenth century murder mystery, set in a monastery, where the mystery is mostly an excuse for exploring the historical and cultural contexts, which are very interesting. Wikipedia has a nice summary: "an intellectual mystery combining semiotics in fiction, biblical analysis, medieval studies, and literary theory". Eco was a semiotician and a philosopher and he brings the best of that to the table in this book.
I have resorted to his phrase "what is good for an old monk may not be so for a young novice" from that book about Emacs over the years. The quote above will not be exact since I was reading it in Italian.
I've read that book two years ago and really liked it. As such, I was recommended "My Name is Red" by Orhan Pamuk which is supposedly similar and which will be the next one to tackle (after I finish my current one: "Faust" by Goethe). After that...no idea. I don't really plan ahead like that since the decision on what book to start depends most on how I feel at the time/what kind of genre/story/setting I desire the most. All I can say is that "The Three Musketeers" by Dumas is on my radar.