The first thing I like about the Streetwise Maps is that they are laminated. No need to worry about getting them wet, dirty, smudgy and having to replace them. When you buy one for a particular city, it should last for years. It's even possible to use a dry erase marker and simply wipe clean.
The map includes all pertinent details of the city, including of course, the streets, hospitals, shopping malls, businesses, museums and landmarks that you would otherwise not know about using a GPS system. If you have a GPS in your car, it's not much good if you're flying to different cities. These maps can be ordered ahead of time and just put them in your briefcase. I recommend this map to all travelers either for business, vacation or even if you live in the city.