How about 7 most marvy solar system surface features?
Some of my candidates:
the obvious Mars wonders, Olympus Mons and Valeris Marineris
the colored surface of IO with one of the active volcanoes there spewing particles into orbit
The great red spot of Jupiter
Saturns rings (they have their own surface)
View of the continents/oceans of earth from orbit
Stark Moonscape with Earth in the background
well that's seven, other candidates?