The United States Geological Survey teamed up with NASA from 1971 to 1998 to create a series of beautiful maps of the Moon and other planets. These maps are color-coded to show geological materials and phenomena, and the result is something that wouldn't look amiss hanging in an art gallery. Here's a portion of the map of the far (or 'dark,' if you prefer) side of the Moon:
And here is one of the Moon's western hemisphere:
You can check out the Wired article on these maps here.