500 Things to Eat covers lots of regional specialties. It has been an enlightening experience. I now have two reasons to go to Iowa: Iowa porkchops and the cinnamon rolls the size of tires at the Machine Shed. Deep fried and/or bacon wrapped things are featured prominently. Each entry has a photograph or two to get your juices flowing.
Unlike some inferior guides, this one gives the full address of every place depicted, as well as the addresses of other restaurants in the area. I'm trying to talk my girlfriend into going on a culinary odyssey over the summer.