Image: National Geographic
The above image is a selection and compression of an enormous interactive map of the almost two hundred manned and unmanned exploratory missions in our solar system over the past fifty years. It was created by graphic designers Sean McNaughton and Samuel Velasco for National Geographic. Click on the link and use the box in the upper-right corner of the screen to choose what area you'd like to see, and zoom as needed.
Link via OhGimzo!