If you are traveling to a city which you are not familiar you probably have to take a map. Most maps are not very user friendly and they are a pain to fold back into their original configuration. A friend of mine recently traveled to San Francisco used a San Francisco Popout Map for the duration of his trip.
The Popout map is about the size of a postcard. It folds out and, as the name suggests, it pops out with two separate maps. One side is a detailed view of the downtown area and the other is an overview of the surrounding area. It is a very sleek alternative to a traditional map and it may help you hide the fact that you are a lost tourist.
Other available U.S. locations include: