Looking for and easy and inexpensive way to adorn your walls? Consider maps. Whether it's a topographical map from USGS, a nautical chart, a collection of National Parks maps, a subway map, a map of the entire world or an historic map, they are fascinating to study. From small framed maps to rolling relics from primary school, and from oversized maps to wallpaper, the world is at your design fingertips. Perhaps you'll find an old one in the attic or frame the one from the MTA. Here's a look at maps that run the gamut and how designers are using them.