It's basically two rooms in a downtown Indianapolis building. You walk in to a large, open space - inviting and well-lit, even on a rainy day. Some of Vonnegut's sketches are framed on the walls, as well as Vonnegut-inspired prints by other artists. A large touchscreen plays interviews with Morley Safer and other friends on a loop, and you can sit on a bench and listen for awhile. The next room has memorabilia from Vonnegut's military career, personal items like glasses and his last pack of cigarettes, and his original typewriter.
The library is an actual lending library, and there are more than just Vonnegut books for checkout. This is, however, a collection of signed books, first editions, and tickets to a speaking engagement that never happened, due to Vonnegut's death.
A touchscreen computer in this room allows you to read some of Vonnegut's unpublished works, plays, and letters. Oh - and rejection letters! Some of them are pretty funny, though I'm not sure if they're supposed to be. It was humorous to me, knowing what little I did about Vonnegut's risque subject matter, to see a rejection letter from Woman's Home Companion.
The Memorial Library is definitely worth a visit if you're anywhere near the area - this coming from someone who wasn't even a Vonnegut fan. Those who think it was crazy of me to visit a memorial library for an author I don't know might be pleased to note that as of now, I'm reading Look at the Birdie, a collection of previously unpublished short stories, and really enjoying them.