I love this image by astrophotographer Ben Canales, as it really illustrates how the Milky Way was sometimes seen by ancient people as the road (or waterway) to the stars (much like this image). Like catching a rainbow, you almost feel that if you walked far enough in that direction you could find the junction from where you could ascend to the heavens.
You can view a larger version, and also purchase a high-res version or print, by clicking on the image or right here.