This is a handy tool to stylize Google Maps to have more or less labels, landmarks, and streets. You can also colorize and export the Google maps styles for use on websites.
Check out this great free tool:
Below is an example of a map I simplified for a Denver graphic design client for a parking map that we're working on. I took screenshots of the map with my retina-display and seamed it together in Photoshop for our use.