BlackWyrm Publishing is running a Kickstarter campaign in order to fund their Erasable Gaming Maps. They’ve got eight styles, some for both Fantasy and Sci-fi players.
From the campaign:
This project will fund a product line of useful, high-quality, and attractive erasable vinyl maps for roleplaying games, strategy games, war games, and other tabletop gaming needs. The initial product line will include eight different types of maps in two different sizes. A fantasy tavern, steampunk zeppelin, modern warehouse, and starship map will be made available in 91 by 51 centimeter size, while a fantasy castle, pirate ship, modern street intersection, and an interstellar dreadnaught map will be made available in 122 by 76 centimeter size. These maps will use 2.5 centimeter (i.e. one inch) squares to indicate distance. Upon completion of this project we will first make these maps available to our backers, and only then to retailers worldwide through distribution and directly to customers through our website.